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Practice Exam Answers

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21
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For which value of m does the graph of y is equal to 18 x squared plus m x plus 2 have exactly one x -intercept?

A
12
B
9
C
0
D
16
22
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Holly finds that open paren 11 m minus 13 n plus 6 m n close paren minus open paren 10 m minus 7 n plus 3 m n close paren is equal to m minus 20 n plus 9 m n What error did Holly make?

A
She added the polynomials instead of subtracting.
B
She only used the additive inverses of negative 7 n and 3 m n when combining like terms.
C
She only used the additive inverse of 10 m when combining like terms.
D
She did not combine all like terms.
23

Using cap v is equal to l w h , what is an expression for the volume of the following rectangular prism? Expand Image

A
the fraction with numerator 15 and denominator 2 x plus 2
B
15 over 2 x
C
15 eighths
D
the fraction with numerator 3 x plus 12 and denominator 2 x plus 8
24

If f of x is equal to square root of 4 x plus 9 end root plus 2 , which inequality can be used to find the domain of f of x ?

A
square root of 4 x is greater than or equal to 0
B
4 x is greater than or equal to 0
C
square root of 4 x plus 9 end root plus 2 is greater than or equal to 0
D
4 x plus 9 is greater than or equal to 0
25

Which expression is equivalent to open paren the fraction with numerator x to the negative 6 power and denominator x squared close paren cubed ?

A
the fraction with numerator 1 and denominator x to the 9th power
B
the fraction with numerator 1 and denominator x to the 5th power
C
the fraction with numerator 1 and denominator x to the 24th power
D
1 over x
26

Which of the following is an odd function?

A
g of x is equal to x squared
B
g of x is equal to 4 x
C
g of x is equal to 5 x minus 1
D
g of x is equal to 3
27

Which expression is equivalent to the following complex fraction? the fraction with numerator 1 over x minus 1 over y and denominator 1 over x plus 1 over y

A
the fraction with numerator x squared y squared and denominator open paren y plus x close paren times open paren y plus x close paren
B
the fraction with numerator y minus x and denominator y plus x
C
the fraction with numerator open paren y minus x close paren times open paren y plus x close paren and denominator x squared y squared
D
the fraction with numerator y plus x and denominator y minus x

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