Rational Exponents — Unit test Answers
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21
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What is the domain of the function ?
A
Negative infinity less-than x less-than infinity
B
0 less-than x less-than infinity
C
0 less-than-or-equal-to x less-than infinity
D
1 less-than-or-equal-to x less-than infinity
22
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Which statement best describes ?
A
–6 is in the domain of f(x) but not in the range of f(x).B
–6 is not in the domain of f(x) but is in the range of f(x).C
–6 is in the domain of f(x) and in the range of f(x).D
–6 is neither in the domain of f(x) nor in the range of f(x).23
Which expression is equivalent to ?
A
x Superscript five-thirds Baseline y
B
s Superscript five-thirds Baseline y Superscript one-third
C
x Superscript three-fifths Baseline y
D
x Superscript three-fifths Baseline y cubed
24
What is the solution of ?
A
x = –8 or x = –1B
x = –8C
x = –1D
no solution25
Which expression is equivalent to ?
A
StartRoot x y Superscript 9 Baseline EndRoot
B
RootIndex 9 StartRoot x y squared EndRoot
C
x (StartRoot y Superscript 9 EndRoot)
D
x (RootIndex 9 StartRoot y squared EndRoot)
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