Unit Test — Unit test Answers
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21
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The value, V(m), of a comic book m months after publication has an average rate of change of –0.04 between m = 36 and m = 60. Which statement must be true?
A
The value of the comic book decreased by a total of $0.04 between m = 36 and m = 60.B
The value of the comic book increased by a total of $0.04 between m = 36 and m = 60.C
The value of the comic book decreased by an average of $0.04 each month between m = 36 and m = 60.D
The value of the comic book increased by an average of $0.04 each month between m = 36 and m = 60.22
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If a(x) = 2x - 4 and b(x) = x + 2, which of the following expressions produces a quadratic function?
A
(ab)(x)B
(StartFraction a Over b EndFraction) (x)
C
(a – b)(x)D
(a + b)(x)23
Given the equation what is the value of x?
A
x = y w + y minus 1
B
x = 2 y w + y minus 1
C
x = 2 y w + y minus 2
D
x = 4 y w + 2 y minus 2
24
If a(x) = 3x + 1 and , what is the domain of ?
A
mc017-3.jpg
B
mc017-4.jpg
C
mc017-5.jpg
D
mc017-6.jpg
25
The formula for the area of a trapezoid is When this equation is solved for , one equation is . Which of the following is an equivalent equation to find ?
A
b Subscript 1 Baseline= StartFraction 2 A minus b Subscript 2 Baseline h Over h EndFraction
B
b Subscript 1 Baseline = 2 A minus b Subscript 2 Baseline h
C
b Subscript 1 Baseline= StartFraction h Over 2 A minus b Subscript 2 Baseline h EndFraction
D
b Subscript 1 Baseline = h (2 A minus b Subscript 2 Baseline h)
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