pre calculus inequality, math homework help

hi 

i need help to answer this 20 q in precalculus in one hour 

Question 1 (4 points)

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Question 2 (4 points)

Graph the function.f(x) = x²

Question 2 options:

	A)
	B)
	C)
	D)

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Question 3 (4 points)

Find the domain of the function.f(x) = 

Question 3 options:

	A)  all real numbers
	B)  {x|x ≠ 0}
	C)  {x|x > -4}
	D)  {x|x ≠ -4}

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Question 4 (4 points)

Determine whether the relation represents a function. If it is a function, state the domain and range.

Question 4 options:

	A)  function domain: {4, 7, 10, 13} range: {20, 35, 50, 65}
	B)  function domain:{20, 35, 50, 65} range: {4, 7, 10, 13}
	C)  not a function

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Question 5 (4 points)

Find the value for the function.Find f(-x) when f(x) = .

Question 5 options:

	A)
	B)
	C)
	D)

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Question 6 (4 points)

Graph the function using its vertex, axis of symmetry, and intercepts.f(x) = x² – 4x + 4

Question 6 options:

	A)  vertex (2, 4) intercept (0, 8)
	B)  vertex (-2, 0) intercepts (0, 4), (-2, 0)
	C)  vertex (2, 0) intercepts (0, 4), (2, 0)
	D)  vertex (-2, 4) intercept (0, 8)

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Question 7 (4 points)

Solve the problem.The manufacturer of a CD player has found that the revenue R (in dollars) is
 when the unit price is p dollars. If the manufacturer sets the price p to maximize revenue, what is the maximum revenue to the nearest whole dollar?

Question 7 options:

	A)  $776,180
	B)  $388,090
	C)  $1,552,360
	D)  $194,045

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Question 8 (4 points)

Use the graph to find the intervals on which it is increasing, decreasing, or constant.

Question 8 options:

	A)  Decreasing on (-∞, ∞)
	B)  Increasing on (-∞, ∞)
	C)  Increasing on (-∞, 0); decreasing on (0, ∞)
	D)  Decreasing on (-∞, 0); increasing on (0, ∞)

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Question 9 (4 points)

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Question 10 (4 points)

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Question 11 (4 points)

Write the equation of a sine function that has the given characteristics.The graph of y = x², shifted 9 units downward

Question 11 options:

	A)  y = 9x2
	B)  y = x2 – 9
	C)  y =
	D)  y = x2 + 9

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Question 12 (4 points)

Write the equation of a sine function that has the given characteristics.The graph of y = , shifted 3 units to the left

Question 12 options:

	A)  y =  + 3
	B)  y =
	C)  y =
	D)  y =  – 3

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Question 13 (4 points)

The graph of a function f is given. Use the graph to answer the question.Find the numbers, if any, at which f has a local minimum. What are the local minima?

Question 13 options:

	A)  f has a local minimum at x = -π and π; the local minimum is 2
	B)  f has no local minimum
	C)  f has a local minimum at x = -π; the local minimum is -2
	D)  f has a local minimum at x = 0; the local minimum is -2

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Question 14 (4 points)

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Question 15 (4 points)

Match the graph to one of the listed functions.

Question 15 options:

	A)  f(x) = x2 – 2x – 1
	B)  f(x) = x2 + 2x – 1
	C)  f(x) = x2 – 2x
	D)  f(x) = x2 + 2x

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Question 16 (4 points)

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Question 17 (4 points)

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Question 18 (4 points)

Determine whether the graph is that of a function. If it is, use the graph to find its domain and range, the intercepts, if any, and any symmetry with respect to the x-axis, the y-axis, or the origin.

Question 18 options:

	A)  function domain: all real numbers range: {y|y ≤ 4} intercepts: (-1, 0), (0, 3), (3, 0) symmetry: none
	B)  function domain: all real numbers range: {y|y ≤ 4} intercepts: (0, -1), (3, 0), (0, 3) symmetry: none
	C)  function domain: {x|x ≤ 4} range: all real numbers intercepts: (-1, 0), (0, 3), (3, 0) symmetry: y-axis
	D)  not a function

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Question 19 (4 points)

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Question 20 (4 points)

Determine whether the graph is that of a function. If it is, use the graph to find its domain and range, the intercepts, if any, and any symmetry with respect to the x-axis, the y-axis, or the origin.

Question 20 options:

	A)  function domain: {x|-π ≤ x ≤ π} range: {y|-1 ≤ y ≤ 1} intercepts: (-π, 0), (- , 0), (0, 0), (, 0), (π, 0)  symmetry: origin
	B)  function domain: all real numbers range: {y|-1 ≤ y ≤ 1} intercepts: (-π, 0), (- , 0), (0, 0), (, 0), (π, 0)  symmetry: origin
	C)  function domain: {x|-1 ≤ x ≤ 1} range: {y|-π ≤ y ≤ π} intercepts: (-π, 0), (- , 0), (0, 0), (, 0), (π, 0)  symmetry: none
	D)  not a function

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