2 multiple choice questions math homework help

i have 20 question multiple choice in precalculus  

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Question 1 (4 points)

 
Question 1 Unsaved

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Use the slope and y-intercept to graph the linear function.G(x) = 3x

Question 1 options:

A) 

B) 

C) 

D) 


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Question 2 (4 points)

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Solve the inequality.x2 + 6x ≤ 0

Question 2 options:

A)  [-6, 0]

B)  (-∞, 0] or [6, ∞)

C)  (-∞, -6] or [0, ∞)

D)  [0, 6]


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Question 3 (4 points)

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Use the figure to solve the inequality.f(x) < 0

Question 3 options:

A)  {x|x ≤ -5 or x ≥ 3}; (-∞, -5] or [3, ∞)

B)  {x|-5 < x < 3}; (-5, 3)

C)  {x|-5 ≤ x ≤ 3}; [-5, 3]

D)  {x|x < -5 or x > 3}; (-∞, -5) or (3, ∞)


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Question 4 (4 points)

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Use the slope and y-intercept to graph the linear function.p(x) = -x – 3

Question 4 options:

A) 

B) 

C) 

D) 


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Question 5 (4 points)

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Determine, without graphing, whether the given quadratic function has a maximum value or a minimum value and then find that value.f(x) = x2 – 8

Question 5 options:

A)  maximum; -8

B)  minimum; -8

C)  minimum; 0

D)  maximum; 0


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Question 6 (4 points)

 Question 6 Unsaved

Determine the slope and y-intercept of the function.p(x) = -x + 4

Question 6 options:

A)  m = -1; b = – 4

B)  m = 0; b = 4 

C)  m =1; b = – 4

D)  m = -1; b =4 


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Question 7 (4 points)

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Use the slope and y-intercept to graph the linear function.F(x) = 6

Question 7 options:

A) 

B) 

C) 

D) 


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Question 8 (4 points)

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Solve the inequality.x2 – 2x – 15 ≤ 0

Question 8 options:

A)  (-∞, -3] or [5, ∞)

B)  [-3, 5]

C)  [5, ∞)

D)  (-∞, -3]


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Question 9 (4 points)

 Question 9 Unsaved

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 9 options:

A)  $194,045

B)  $388,090

C)  $1,552,360

D)  $776,180


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Question 10 (4 points)

 Question 10 Unsaved

Solve the inequality.x2 + 3x – 4 > 0

Question 10 options:

A)  (-∞, -4)

B)  (-4, 1)

C)  (1, ∞)

D)  (-∞, -4) or (1, ∞)


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Question 11 (4 points)

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

Question 11 options:

A)  vertex (2, -4)
intercept (0, -8)

B)  vertex (-2, 4)
intercepts (0, 0), (- 4, 0)

C)  vertex (2, 4)
intercepts (0, 0), (4, 0)

D)  vertex (-2, -4)
intercept (0, -8)


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Question 12 (4 points)

 Question 12 Unsaved

Solve the problem.The owner of a video store has determined that the cost C, in dollars, of operating the store is approximately given by  where x is the number of videos rented daily. Find the lowest cost to the nearest dollar.

Question 12 options:

A)  $741

B)  $559

C)  $438

D)  $620


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Question 13 (4 points)

 Question 13 Unsaved

Determine, without graphing, whether the given quadratic function has a maximum value or a minimum value and then find that value.f(x) = -x2 – 2x + 1

Question 13 options:

A)  minimum; – 1

B)  minimum; 2

C)  maximum; 2

D)  maximum; – 1


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Question 14 (4 points)

 Question 14 Unsaved

Determine the quadratic function whose graph is given.
||

Question 14 options:

A)  f(x) = -x2 – 4x – 5

B)  f(x) = -x2 + 4x + 5

C)  f(x) = x2 – 8x + 5

D)  f(x) = x2 + 4x + 5


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Question 15 (4 points)

 Question 15 Unsaved

Determine the slope and y-intercept of the function.G(x) = -6x

Question 15 options:

A)  m = 0; b = -6

B)  m = -6; b = 0

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