Find the domain and the range of the function.

A. D: All real numbers, R: All real numbers
B. D: x ? 0, R: y ? 0
C. D: x > 0, R: y > 0
D. D: x ? 0, R: y ? 0


Answer: A

Mathematics

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A. ±1, ± , ±2, ± , ±7, ±14
B. ±1, ± , ±7, ± , ± , ± 
C. ±1, ±2, ±7, ±14
D. ±1, ± , ±2, ±7, ±14

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Use the Gauss-Jordan method to find A-1, if it exists.A = 

A.

B.

C.

D. Does not exist

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Convert to a logarithmic equation.yz = 8

A. z = logy 8 B. y = logz 8 C. z = log9 y D. y = log9 z

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An integer n is divided by 3 and the quotient is an even integer. What does this tell you about n? Give an example.

A. n is a multiple of 6,
B. n is a multiple of 12,
C. n is a multiple of 21,
D. n is a multiple of 9,
E. n is a multiple of 15,

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