Write the expression as a logarithm of a single expression. Assume that variables represent positive numbers.log95 + log9(x3 - 4) + log94

A. log9( x3 - 80)
B. log9( x3 + 5)
C. log9( 20x3 - 80)
D. log9(5x3 - 20)


Answer: C

Mathematics

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Factor out the greatest common factor.6x3 + 4x2 - 2x

A. 2x(3x2 + 2x - 2) B. 2(3x3 + 2x2 - x) C. 2x(3x2 + 2x + 1) D. 2x(3x2 + 2x - 1)

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Write an equivalent expression without a negative exponent.7a-3

A. -7a3
B. - 
C.
D.

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Solve the problem.Kimberly invested  in her savings account for 4 years. When she withdrew it, she had . Interest was compounded continuously. What was the interest rate on the account? Round to the nearest tenth of a percent.

A. 3.4% B. 3.3% C. 3.55% D. 3.5%

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Solve the problem.From a point on a straight road, John and Fred ride bicycles in opposite directions. John rides 6 miles per hour and Fred rides 10 miles per hour. In how many hours will they be 64 miles apart?

A. 3 hours B. Not enough information C. 4 hours D. 5 hours

Mathematics