A parent interest group is looking at whether birth order affects scores on the ACT test. It was suggested that, on average, first-born children earn lower ACT scores than second-born children. After surveying a random sample of 100100 first-born children, the parents’ group found that they had a mean score of 23.823.8 on the ACT. A survey of 250250 second-born children resulted in a mean ACT score of 24.124.1. Assume that the population standard deviation for first-born children is known to be 1.21.2 points and the population standard deviation for second-born children is known to be 2.42.4 points. Is there sufficient evidence at the 1%1% level of significance to say that the mean ACT score of first-born children is lower than the mean ACT score of second-born children? Let first-born children be Population 1 and let second-born children be Population 2.
Step 1 of 3 :
State the null and alternative hypotheses for the test. Fill in the blank below.
Step 2: What is the Test Statistic
Step 3: Do we reject or fail to reject the null hypothesis? Do we have sufficient or insufficient data?

Largest value can decreased by 49 without affecting the value of median.

The median is the middle score in the set. To find the median, you take these steps:

Step 1: Arrange the scores in numerical order

Step 2: Count how many scores you have

Step 3: Divide the total scores by 2

Step 4: If you have an odd number of total scores, round up to get the position of the median number. If you have an even number of total scores, go to the number in that position and average it with the number in the next higher position to get the median.

For example:

given sets: 5, 4, 3, 6, 8

now rearrange the sets in increasing order: 3, 4, 5, 6, 8

median = ( n + 1 ) / 2 = ( 5 + 1) / 2 = 3

here median = 5

We have given that:

384, 350,  354, 361, 378, 424, 321, 396, 404, 374, 376, 370, 363, 366, 365 329, 339, 394, 393, 369, 376, 359, 354, 408, 330, 398.

when we arrange it in increasing order.

here n = 26

median = ( n + 1 ) / 2

median =  average of 13th and 14th element

median = 371

larger value can be decreased by 420 - 371 = 49

Hence,

Largest value can decreased by 49 without affecting the value of median.

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Disclaimer: The question given was incomplete on the portal. Here is the complete question.

Question: A sample of 26 offshore oil workers took part in a simulated escape exercise, resulting in the accompanying data on time (sec) to complete the escape:

384, 350,  354, 361, 378, 424, 321, 396, 404, 374, 376, 370, 363, 366, 365 329, 339, 394, 393, 369, 376, 359, 354, 408, 330, 398.

By how much could the largest sample observation be decreased without affecting the value of the median?

The largest sample observation could be decreased by 54.5 without affecting the value of the median.

We have given the data:

384, 350,  354, 361, 378, 424, 321, 396, 404, 374, 376, 370, 363, 366, 365 329, 339, 394, 393, 369, 376, 359, 354, 408, 330, 398.

Now, we arrange it in increasing order.

321, 329, 330, 339, 350, 354, 354, 359, 361, 363, 365, 366, 369, 370, 374, 376, 376,378, 384, 393, 394, 396, 398,404, 424

Here n = 26

median = ( n + 1 ) / 2

median =  369 + 370 / 2

median = 369.5

Larger value can be decreased by 424 - 369.5= 54.5

Therefore, the largest sample observation could be decreased by 54.5 without affecting the value of the median.

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The question given was incomplete on the portal. Here is the complete question.

A sample of 26 offshore oil workers took part in a simulated escape exercise, resulting in the accompanying data on time (sec) to complete the escape:

384, 350,  354, 361, 378, 424, 321, 396, 404, 374, 376, 370, 363, 366, 365 329, 339, 394, 393, 369, 376, 359, 354, 408, 330, 398.

By how much could the largest sample observation be decreased without affecting the value of the median?

Based on the instructions given, the next step would be to subtract 40 to the current number.

Initial number: 5.

Subtract 40: Assuming we start with the number 5, subtracting 40 would give us -35.

Subtract 5: If we take the result from step 2 (-35) and subtract 5, we would have -40.

At this point, the current number is -40. The next step you provided is "A - Subtract 40

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Answer:

The number is 72

Step-by-step explanation:

2/3*27 = 2*9 = 18

so 18 = 25%

25% = 1/4

so 1/4 = 18/?

so ? = 18*4 = 72

Answer:

x=72

Step-by-step explanation:

This is an easy equation.

2/3*27=25/100x

solve.

2/3 * 27 is 18

18=25/100x

Divide. (25/100 can be converted to 1/4

Divide 18 by 1/4x

x=72!

Cheers, I hope you can understand.

The correlation coefficient between the student's height and the distance they were able to jump is 0.86.

The correlation coefficient is a number that ranges from -1 to 1. It shows the strength of the relationship between two variables. It also shows the direction of the relationship.

Positive correlation is when the two variables move in the same direction. If one variable increases, the other variable also increases. Negative correlation is when two variables move in different direction. If one variable increases, the other variable decreases. Zero correlation is when there is no relationship between the variables.

The correlation coefficient is calculated using a financial calculator.

Here is the complete question:

A group of students want to determine if a person's height is linearly related to the distance they are able to jump.

To determine the relationship between a person's height and the distance they are able to jump, the group of students measured the height, in inches, of each person in their class and then measured the distance, in feet, they were able to jump from a marked starting point.

Each student was given three tries at the jump and their longest jump distance was recorded. The data the students collected is shown below.

Enter the correlation coefficient. Round your answer to the nearest hundredth.

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Answer:

It's 0.92

Step-by-step explanation:

I took the test already

Answer:

Step 3 i think because 10-7+7=13 because if u do that problem u actually get 10 instead of 13

Step-by-step explanation:

because 10-7+7=13 because if u do that problem u actually get 10 instead of 13

The arc length of the curve C between t=0 and t=2π is 2π units.

The formula for finding arc length for a curve parameterized by x = f(t), y = g(t) between t=a and t=b is:

L = ∫a^b √[f'(t)^2 + g'(t)^2] dt

In this case, we have x = cos(t) and y = sin(t). Therefore, we have:

dx/dt = -sin(t)

dy/dt = cos(t)

Using these derivatives, we can calculate the integrand:

√[(-sin(t))^2 + (cos(t))^2] = √[1] = 1

So the integral for finding arc length becomes:

L = ∫0^2π 1 dt

Simplifying this integral, we get:

L = [t]0^2π = 2π

Therefore, the arc length of the curve C between t=0 and t=2π is 2π units.

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Answer:

B isa the answer for me it might be wrong for you or switch them

Step-by-step explanation:

Hawaii's coldest recorded temperature is 95°F warmer than Alaska's coldest recorded temperature. This is primarily because Hawaii is closer to the equator and has a tropical climate that is warm and humid throughout the year. The coldest temperature ever recorded in Alaska is -80°F, while the coldest recorded temperature in Hawaii is 15°F.

Temperature is a measure of the amount of heat in an object. It's typically measured in Fahrenheit, Celsius, or Kelvin. The coldest temperature ever recorded in Alaska is -80°F, whereas the coldest temperature ever recorded in Hawaii is 15°F. This implies that Hawaii's coldest temperature is 95°F warmer than Alaska's coldest.

Because of its location, Alaska's temperature can be very harsh. In the winter, temperatures frequently drop below freezing, making it difficult for people and animals to live there. In contrast, Hawaii has a tropical climate that is warm and humid throughout the year. It's also located closer to the equator, where the sun's rays are stronger, and the temperature is higher.

Hawaii's coldest recorded temperature is 95°F warmer than Alaska's coldest recorded temperature. This is primarily because Hawaii is closer to the equator and has a tropical climate that is warm and humid throughout the year. Therefore, Hawaii's coldest recorded temperature is 95°F warmer than Alaska's coldest recorded temperature.

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Step-by-step explanation:

.5 / 1.5    is  1/3       (1/3)^2  = 1/9

Answer: 0.09

Step-by-step explanation:

0.5 ÷ 1.5 = 0.3 0.3squared = 0.09

The correct answer is option (C).

Sine (sin), cosine (cos), tangent (tan), cosecant (csc), secant (sec), and cotangent are the six functions (cot).

The equation t = Q - P, where Q and P are the specified locations, can be used to determine the components of the vector t. Therefore:

t = (–18, 2) – (–13, 11) = (–18 + 13, 2 – 11) = (–5, –9) (–5, –9)

The vector's magnitude is given by:

|t| = √(–5)^2 + (–9)^2 = √106 ≈ 10.296

The formula = tan1 (y/x), where x and y are the vector's components, can be used to determine the direction of the vector t. The direction must be expressed in terms of sine and cosine functions because we are required to represent the vector in trigonometric form.

θ = tan⁻¹ (–9/–5) ≈ 60.945°

In trigonometric form, the vector t is thus represented as follows:

t = [t|cos|i] + [t|sin|j]

We get the following by altering the values of |t| and:

t = 10.296 cos I + 10.296 sin j of angle 60.945

As a result, the following is the proper trigonometric representation of the vector t:

t = 10.296 cos I + 10.296 sin j of angle 60.945

Thus, alternative is the right response (C).

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The mathematical expression for "nine increased by a number" is,

9 + x,  ∀x>0

Use the concept of inequality defined as:

An inequality is a mathematical statement that uses the inequality symbol to indicate the relationship between two expressions. Both sides of an inequality sign have different expressions.

It signifies that the expression on the left should be more or smaller than the expression on the right, or vice versa. Literal inequalities occur when the relationship between two algebraic expressions is defined using inequality symbols.

The given statement is: "Nine increased by a number"

Consider a number x which is greater than 0.

If nine is increased by a number then the number 9 will be 9 + x.

As 9 + x  > 9  for every x > 0,

Therefore, the given statement can be written as,

9 + x,  ∀x>0

Hence the mathematical expression for the given statement is,

9 + x,  ∀x>0

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CM is the perpendicular bisector of AB at M, it means that CM is perpendicular to AB, and AM=BM. Therefore, we have two right triangles, triangle AMC and triangle BMC, with a shared side CM, and AM=BM.

By the Pythagorean theorem, we know that in a right triangle, the square of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides. Applying this to triangles AMC and BMC, we have:

AC² = AM² + CM²

BC² = BM² + CM²

Since AM=BM, we can substitute AM for BM in the second equation, giving:

BC² = AM² + CM²

Since the left-hand sides of these two equations are equal (by the given that CM is the perpendicular bisector of AB), we can set their right-hand sides equal to each other and simplify:

AC² = BC²

Taking the square root of both sides gives us:

AC = BC

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The depth of water in tank A is modeled by a differentiable and increasing function h.

This means that the function h describes how the depth of water changes as time passes.

The fact that it is differentiable means that the function has a well-defined slope at every point, which indicates how quickly the depth is changing. This means that the function is continuous and smooth, with no sharp turns or corners.
Furthermore, the fact that the function is increasing means that the depth is always getting higher over time.

This makes sense since water is constantly being added to the tank.

Hence, the depth of water in tank A is described by a differentiable and increasing function h, which means that the function has a well-defined slope at every point and that the depth is always getting higher over time.

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Answer:

The discount is $77, and the discount percent is 5%

Step-by-step explanation:

Discount: $1,540 - $1,463 = $77

Discount percent: $1,463 / $1,540 = 0.95, 1.00 - 0.95 = 0.05, 0.05 = 5%

Answer:

x=72

Step-by-step explanation:

x-9=3/4 ⋅ x+9

1/4 ⋅ x -9=9

1/4⋅x=18

x=72

The range of the graph of y = cos x is -1 ≤ y ≤ 1.

Option (b) -1 ≤ y ≤ 1 is the correct answer.

The range of a function refers to the set of all possible output values that the function can take. For the function y = cos x, the cosine function oscillates between -1 and 1 as the input x varies.

When x is at its maximum value (such as x = 0, 2π, 4π, etc.), the cosine function evaluates to 1. Similarly, when x is at its minimum value (such as x = π, 3π, 5π, etc.), the cosine function evaluates to -1.

Therefore, the range of the graph of y = cos x is -1 ≤ y ≤ 1, which means that y can take any value between -1 and 1, inclusive. This is option (b) in the given choices.

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a. The MRS is constant (not diminishing) at 1/3.

U(x,y) = 3x + y

The MRS for this utility function can be found by taking the partial derivative of x concerning y:

MRS = ∂U/∂y / ∂U/∂x = 1 / 3

The MRS is constant (not diminishing) at 1/3.

b. The MRS is diminishing because as y increases, the MRS decreases.

U(x,y) = x * y

The MRS for this utility function can be found by taking the partial derivative of x concerning y:

MRS = ∂U/∂y / ∂U/∂x = 1 / y

The MRS is diminishing because as y increases, the MRS decreases.

c. The MRS is diminishing because as y increases, the MRS decreases.

U(x,y) = x * y

The MRS for this utility function can be found by taking the partial derivative of x concerning y:

MRS = ∂U/∂y / ∂U/∂x = 1 / y

Similar to the previous case, the MRS is diminishing because as y increases, the MRS decreases.

d. The MRS depends on the ratio of y to x and can vary.

U(x,y) = x^2 - y^2

The MRS for this utility function can be found by taking the partial derivative of x concerning y:

MRS = ∂U/∂y / ∂U/∂x = -2y / 2x = -y / x

The MRS depends on the ratio of y to x and can vary. It is not necessarily diminishing.

e. The MRS depends on the values of x and y and can vary.

U(x,y) = x + y / (x * y)

The MRS for this utility function can be found by taking the partial derivative of x concerning y:

MRS = ∂U/∂y / ∂U/∂x = -1 / (y^2) + 1 / (x^2 * y)

The MRS depends on the values of x and y and can vary. It is not necessarily diminishing.

Now let's move on to the second part of the question:

For parts a, b, and c, we need more specific information about the utility functions, such as the values of α and β, to calculate the demand curves for x and y, the indirect utility function, and the expenditure function.

To show that the demand curve is homogeneous in degree zero in terms of income and prices, we need the specific functional form of the utility functions and information about the prices of x and y. Please provide the necessary details for parts A, b, and c to continue the analysis.

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Answer:

a=8/3

Step-by-step explanation:

Ok, so first, we are gonna make this an equation

13-3a=5

Now, we will subtract 13 from 5

Now we have -3a=-8

Now, divide -8 by -3 and we get...

a=8/3

(i) If f is an even function, then f(y) = 2 ∫[0,∞] f(x) cos(2πxy) dx.

(ii) If f is an odd function, then f(y) = -2i ∫[0,∞] f(x) sin(2πxy) dx.

The Fourier transform pair for a function f(x) is defined as follows:

F(k) = ∫[-∞,∞] f(x) \(e^{-2\pi iyx}\) dx

f(x) = (1/2π) ∫[-∞,∞] F(k) \(e^{2\pi iyx}\) dk

Now let's prove the given properties:

(i) If f is an even function, then f(y) = 2∫[0,∞] f(x) cos(2πxy) dx.

To prove this, we start with the Fourier transform pair and substitute y for k in the Fourier transform of f(x):

F(y) = ∫[-∞,∞] f(x) \(e^{-2\pi iyx}\) dx

Since f(x) is even, we can rewrite the integral as follows:

F(y) = ∫[0,∞] f(x) \(e^{-2\pi iyx}\) dx + ∫[-∞,0] f(x) \(e^{2\pi iyx}\) dx

Since f(x) is even, f(x) = f(-x), and by substituting -x for x in the second integral, we get:

F(y) = ∫[0,∞] f(x) \(e^{-2\pi iyx}\) dx + ∫[0,∞] f(-x) \(e^{2\pi iyx}\)dx

Using the property that cos(x) = (\(e^{ ix}\) + \(e^{- ix}\))/2, we can rewrite the above expression as:

F(y) = ∫[0,∞] f(x) (\(e^{-2\pi iyx}\) + \(e^{2\pi iyx}\))/2 dx

Now, using the definition of the inverse Fourier transform, we can write f(y) as follows:

f(y) = (1/2π) ∫[-∞,∞] F(y) \(e^{2\pi iyx}\) dy

Substituting F(y) with the expression derived above:

f(y) = (1/2π) ∫[-∞,∞] ∫[0,∞] f(x) \(e^{-2\pi iyx}\) + \(e^{2\pi iyx}\)/2 dx dy

Interchanging the order of integration and evaluating the integral with respect to y, we get:

f(y) = (1/2π) ∫[0,∞] f(x) ∫[-∞,∞] (\(e^{-2\pi iyx}\) + \(e^{2\pi iyx}\))/2 dy dx

Since ∫[-∞,∞] (\(e^{-2\pi iyx}\) + \(e^{2\pi iyx}\))/2 dy = 2πδ(x), where δ(x) is the Dirac delta function, we have:

f(y) = (1/2) ∫[0,∞] f(x) 2πδ(x) dx

f(y) = 2 ∫[0,∞] f(x) δ(x) dx

f(y) = 2f(0) (since the Dirac delta function evaluates to 1 at x=0)

Therefore, f(y) = 2 ∫[0,∞] f(x) cos(2πxy) dx, which proves property (i).

(ii) If f is an odd function, then f(y) = -2i ∫[0,∞] f(x) sin(2πxy) dx.

The proof for this property follows a similar approach as the one for even functions.

Starting with the Fourier transform pair and substituting y for k in the Fourier transform of f(x):

F(y) = ∫[-∞,∞] f(x) \(e^{-2\pi iyx}\) dx

Since f(x) is odd, we can rewrite the integral as follows:

F(y) = ∫[0,∞] f(x) \(e^{-2\pi iyx}\) dx - ∫[-∞,0] f(x) \(e^{-2\pi iyx}\) dx

Using the property that sin(x) = (\(e^{ ix}\) - \(e^{-ix}\))/2i, we can rewrite the above expression as:

F(y) = ∫[0,∞] f(x) \(e^{-2\pi iyx}\) - \(e^{2\pi iyx}\)/2i dx

Now, following the same steps as in the proof for even functions, we can show that

f(y) = -2i ∫[0,∞] f(x) sin(2πxy) dx

This completes the proof of property (ii).

In summary:

(i) If f is an even function, then f(y) = 2 ∫[0,∞] f(x) cos(2πxy) dx.

(ii) If f is an odd function, then f(y) = -2i ∫[0,∞] f(x) sin(2πxy) dx.

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a) Rocky Mountain should order 200 tires each time it places an order.

b) The total cost of this policy is $17,160.

a) To determine how many tires Rocky Mountain should order each time, we need to consider the different price levels and find the point where it is most cost-effective to order. Let's analyze the three price levels:

If fewer than 200 tires are ordered: The purchase price is $25 per tire.

If 200 or more, but fewer than 8,000 tires are ordered: The purchase price is $17 per tire.

If 8,000 or more tires are ordered: The purchase price is $13 per tire.

Since the ordering cost is $35 per order, it is most cost-effective to order the maximum quantity that falls within the second price level, which is 200 tires.

b) To calculate the total cost of this policy, we need to consider the ordering cost and the holding cost. The holding cost is 40% of the purchase price per tire per year. Let's calculate the total cost:

Total holding cost = (Purchase price per tire * Quantity ordered * Holding cost rate) / 2 = (($17 * 10,000 * 0.4) / 2) + (($13 * 2,000 * 0.4) / 2) = $34,000 + $5,200 = $39,200

Total cost = Total ordering cost + Total holding cost = (Ordering cost per order * Number of orders) + Total holding cost = ($35 * (10,000 / 200)) + $39,200 = $1,750 + $39,200 = $40,950

Therefore, the total cost of this policy is $40,950.

Rocky Mountain Tire Center should order 200 tires each time it places an order, resulting in a total cost of $40,950 for this policy. This ordering quantity and cost analysis allows Rocky Mountain to make efficient and cost-effective decisions in managing their inventory.

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To translate an entire triangle, find the coordinates of each of the triangle's vertices, add the horizontal translation then plot the three translated points

Whenever an object is moved from one location to the next without changing its size, shape, or orientation, a translation takes place. If we know which way and how far the figure to be moved, we can draw the translation in the coordinate plane.

There are some steps of translating the triangle:

Step 1: Find the coordinates of each of the triangle's vertices in step one.

Step 2: Add the horizontal translation value to each vertex's x-coordinate and the vertical translation value to each point's y-coordinate to translate each point. If the horizontal translation is to the left or the vertical translation is downward for these translations, add a negative number.

Step 3: Plot the three translated points and draw the triangle by drawing a straight line between each pair of points.

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Answer:

Step-by-step explanation:

\(-2 (1-4x) = 3x + 8\\\\Expand\: -2(1-4x) \: :-2+8x\\-2+8x=3x+8\\\\\mathrm{Add\:}2\mathrm{\:to\:both\:sides}\\-2+8x+2=3x+8+2\\\\Simplify\\8x=3x+10\\\\\mathrm{Subtract\:}3x\mathrm{\:from\:both\:sides}\\8x-3x=3x+10-3x\\\\Simplify\\5x =10\\\\\mathrm{Divide\:both\:sides\:by\:}5\\\frac{5x}{5}=\frac{10}{5}\\\\Simplify\\\\x =2\)

Answer:

2

Step-by-step explanation:

-2 (1-4x) = 3x + 8

-2 × 1 - -2 × 4x = 3x + 8

-2 + 8x = 3x + 8

8x - 3x = 8 + 2

5x = 10

x = 10/5

x = 2

hope this helps you!

Answer: There are 6 wizards in the order.

Step-by-step explanation:

Let's suppose that:

Let's define S as the rate at which each wizard casts the spells.

Let's suppose also that there are N wizards in the order.

We know that the N wizards can complete the task in 4 hours, then:

(N*S)*4h = 1

(the 1 represents the completed task)

And we know that if 2 more wizards joined, the total task would be completed in 3 hours, then we have the equation:

(N+2)*S*3h = 1

Then we have the system of equations:

(N*S)*4h = 1

(N+2)*S*3h = 1

And we want to find the value of N.

To start, we need to isolate S in one of the equations, i will isolate S in the first equation:

S = (1/N*4h)

Now we can replace this in the second equation, to get:

(N+2)*(1/N*4h)*3h = 1

(N + 2)*3/(4*N) = 1

Now we can solve this for N.

(3/4) + 6/(4N) = 1

Now we can multiply by N in both sides to get:

(3/4)*N + 6/4 = N

6/4 = N - (3/4)*N = (1/4)*N

(6/4)*4 = N

6 = N

There are 6 wizards in the order.

Answer:

Options C and D

Step-by-step explanation:

From the graph attached,

Coordinates of the vertices,

X → (0, 0)

Y → (-1, -2)

Z → (0, -2)

Rule for the rotation of a  point (h, k) by 180° about the origin is given by,

(h, k) → (-h, -k)

By this rule,

Coordinates of the image points will be,

X(0, 0) → X'(0, 0)

Y(-1, -2) → Y'(1, 2)

Z(0, -2) → Z'(0, 2)

Therefore, Option (C) and Option (D) are the correct options.

Answer

C/D

Step-by-step explanation:

The expression 2^n - 5^n is indeed a solution to the recurrence relation an = 7an-1 - 10an-2. To use it as the closed formula for the sequence, the initial conditions need to be specified. The initial values for a0 and a1 would need to be determined based on the sequence being generated. Once the initial conditions are established, the expression 2^n - 5^n can be used to find the nth term of the sequence directly without having to rely on the recurrence relation.

To demonstrate that 2^n - 5^n satisfies the given recurrence relation, we need to substitute it into the relation and verify that it holds true for all n.

Given recurrence relation: an = 7an-1 - 10an-2

Substituting 2^n - 5^n into the recurrence relation:

7(2^(n-1) - 5^(n-1)) - 10(2^(n-2) - 5^(n-2))

Expanding and simplifying the expression:

7 * 2^(n-1) - 7 * 5^(n-1) - 10 * 2^(n-2) + 10 * 5^(n-2)

Rearranging the terms:

2 * 7 * 2^(n-2) - 2 * 7 * 5^(n-2) - 10 * 2^(n-2) + 10 * 5^(n-2)

Combining like terms:

2(7 * 2^(n-2) - 7 * 5^(n-2) - 5 * 2^(n-2) + 5 * 5^(n-2))

Factoring out 2 from the expression:

2(7 * 2^(n-2) - 5 * 2^(n-2) - 7 * 5^(n-2) + 5 * 5^(n-2))

Simplifying further:

2(2^(n-2)(7 - 5) - 5^(n-2)(7 - 5))

The expression simplifies to:

2(2^(n-2)(2) - 5^(n-2)(2))

2 * 2^(n-1) - 2 * 5^(n-1)

Which is equal to 2^n - 5^n.

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Answer:

Step-by-step explanation:

The formula of a slope:

\(m=\dfrac{y_2-y_1}{x_2-x_1}\)

We have two points

P(-4, -1) and Q(3-3)

Substitute:

\(m=\dfrac{-3-(-1)}{-3-(-4)}=\dfrac{-3+1}{-3+4}=\dfrac{-2}{1}=-2\)

Answer:

44.4

Step-by-step explanation:

sin(40)= x/69

x=69(sin40)

x= 44.4

Answer:

y-2=0

Step-by-step explanation:

okk

simple

y-2=0

okk

Answer:

second one

Step-by-step explanation: