Functions Review Question Preview (ID: 42007)


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What is the slope between (2, -5) and (-4, 1)?
a) -1
b) 2
c) 1/2
d) -1/2

A firework is launched from a cliff overlooking the ocean. The elevation of the firework shell, in feet above sea level, t seconds after launch is given by the expression -16t^2+157t+63. How high is the top of the cliff , in feet above sea level?
a) 248
b) 63
c) 5
d) 157

While standing on a cliff 24 feet above the lake, Serena threw a rock with an initial velocity of 20 feet per second. How many seconds does it take for the rock to hit the water?
a) 20
b) 0
c) 2
d) 24

Suppose that the function f(x)= 0.1x + 7 represents the cost to download x songs a month from an internet music club. Arthur now has $10. How many more dollars does Arthur need to buy 60 songs?
a) 3
b) 8
c) 13
d) 10

A theater has 39 seats in row 1, 43 seats in row 2, 47 seats in row 3, and so on, up to Row 35. If this pattern continues, which row has 75 seats?
a) 9
b) 10
c) 11
d) 12

Gym A charges $149.99 initiation fee and $20 per month. Gym B charges $39.99 per month with no initiation fee. What is difference between Gym A and Gym B?
a) f(t)= -19.99t + 149.99
b) f(t)= -19.99t - 149.99
c) f(t)= 19.99t + 149.99
d) f(t)= -19.99t - 149.99

Sam owns a clothing manufacturing business. The function C(x)=15x + 122 describes the amount it costs to employ a seamstress for x number of hours per week. What would a reasonable domain be for this function?
a) -40 up to 40
b) 0 up to 1000
c) 0 up to 40
d) all real numbers

What are the zeros of the function f(x) = x^2 - 6x - 27?
a) x= 9 and x= -3
b) x= 9 and x= 3
c) x= -9 and x= -3
d) x= -9 and x= 3

Write the following equation in slope intercept form 3x + 4y = 12
a) y = -3/4x + 4
b) y = 3/4x + 4
c) y = -3/4x + 12
d) y = -3/4x - 4

What is the y-intercept of the following equation 2x - 3y = 6
a) 3
b) 6
c) 2
d) -2

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