Math 1 Review Question Preview (ID: 30622)


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Which expression is equivalent to t^2 + 36? (t^2 = t to the second power)
a) (t - 6) (t - 6)
b) (t + 6) (t - 6)
c) (t - 12) (t - 3)
d) (t - 12) (t + 3)

What is the minimum of y=4x^2-8x+7? (4x^2 = 4 times x to the second power)
a) (1, 3)
b) (3, 1)
c) (-1, -3)
d) (-3, -1)

The function f(t)=-5t^2 + 20t + 60 models the approximate height of an object t seconds after it is launched. How many seconds does it take the object to hit the ground?
a) 4
b) 5
c) 6
d) 7

Suppose the function f(x) = 2x + 12 represents the cost to rent x movies a month from an internet movie club. Sarah now has $10. How many more dollars does Sarah need to rent 7 movies next month?
a) 12
b) 6
c) 10
d) 16

Solve for m in the equation E = mc^2
a) m = E - c^2
b) m = Ec^2
c) m = c^2/E
d) m = E/c^2

Suppose the equation V = 20.8x^2 - 458.3x + 3500 represents the value of a car from 1964 to 2002. What year did the care have the least value? (x = 0 in 1964)
a) 1965
b) 1970
c) 1975
d) 1980

Cell phone Company Y charges a $10 start-up fee plus $0.10 per minute, x. Cell phone Company Z charges $0.20 per minute, x, with no start up fee. Which function represents the difference in the cost between Company Y and Company Z?
a) f(x) = -0.10x - 10
b) f(x) = -0.10x + 10
c) f(x) = 10x - 0.10
d) f(x) = 10x + 0.10

Solve the system. y=5x + 5 and y=15x - 1
a) (8, 3/5)
b) (-3/5, 8)
c) (3/5, 8)
d) (-3/5, -8)

Find the solution to the system. y=3/2x and 6x - 4y=1
a) No Solution
b) Infinite Solutions
c) (3/2, 1)
d) (0, 0)

Suppose a video store charges nonmember $4 to rent each video. A store membership costs $21 and members pay only $2.50 to rent each video. For what number of videos is the cost the same?
a) 11
b) 12
c) 13
d) 14

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