# 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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