Write the expression as a sum of two logarithms.log10 xy
A. log10 x - log10 y
B. log5 x - log5 y
C. log5 x + log5 y
D. log10 x + log10 y
Answer: D
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Perform indicated operation and round as indicated.63.99 ÷ 7.9 round to the nearest tenth
A. 8.1 B. 9.1 C. 0.8 D. 81.0
Solve the problem.An object in simple harmonic motion has a frequency of 
oscillations per second and an amplitude of 5 feet. Write an equation in the form d = a sin ?t for the object's simple harmonic motion.
A. d = 5 sin 
B. d = 5 sin 
C. d = 5 sin 
D. d = 5 sin 3?t
Write the statement as an absolute value inequality.x is within 10 units of 9
A. |10 - x| < 9 B. |x - 9| ? 10 C. |x - 9| < 10 D. |x - 10| < 9
Determine whether the given function is one-to-one. If it is one-to-one, find its inverse.f(x) = 
A. Not one-to-one
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 