i have 20 question multiple choice in precalculus
Question 1 (4 points)
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)
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)
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)
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)
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)
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)
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)
Solve the inequality.x2 – 2x – 15 ≤ 0
Question 8 options:
A)
(-∞, -3] or [5, ∞)
B)
[-3, 5]
C)
[5, ∞)
D)
(-∞, -3]
Save
Question 9 (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 9 options:
A)
$194,045
B)
$388,090
C)
$1,552,360
D)
$776,180
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Question 10 (4 points)
Solve the inequality.x2 + 3x – 4 > 0
Question 10 options:
A)
(-∞, -4)
B)
(-4, 1)
C)
(1, ∞)
D)
(-∞, -4) or (1, ∞)
Save
Question 11 (4 points)
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)
Save
Question 12 (4 points)
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
Save
Question 13 (4 points)
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
Save
Question 14 (4 points)
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
Save
Question 15 (4 points)
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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