Modeling with Rational Functions — Unit test Answers
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21
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Which expression is equivalent to the following complex fraction?
A
StartFraction y + x Over y minus x EndFraction
B
StartFraction (y minus x) (y + x) Over x squared y squared EndFraction
C
StartFraction x squared y squared Over (y + x) (y + x) EndFraction
D
StartFraction y minus x Over y + x EndFraction
22
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Which statement is true about the discontinuities of the function f(x)?
A
There is a hole at x = 2.B
There are asymptotes at x = 0 and x = –1.C
There are asymptotes at x = 0 and x = –1 and a hole at .D
There are holes at x = 0 and x = –1 and an asymptote at x = 2.23
A basketball player’s free-throw percentage is the ratio of the number of successful shots made to the number of shots attempted. A basketball player has made 13 of the first 20 free throws she has attempted this season. Which rational expression can be used to find the free throw percentage for the season if she successfully makes her next x free-throw attempts?
A
mc017-1.jpg
B
mc017-2.jpg
C
mc017-3.jpg
D
mc017-4.jpg
24
For the inverse variation equation , what is the value of p when V = ?
A
StartFraction 1 Over 32 EndFractionB
One-halfC
2D
3225
Which solution to the equation is extraneous?
A
a = –2B
a = –2 and a = 4C
neither a = –2 nor a = 4D
a = 426
What is the quotient?
A
StartFraction 1 Over 2 y EnDfraction
B
StartFraction 3 y + 2 Over 6 y squared EndFraction
C
StartFraction 1 Over y EndFraction
D
StartFraction 2 (3 y + 2) Over 3 EndFraction
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