For problems 4-6 use the power rule to rewrite the expression as a product and simplify as much as possible.

A.
B.
C. 7
D.
E. None of these


Answer: A

Mathematics

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Perform the indicated operations.7.8 + (-3.6) + (-4.7)

A. 16.1 B. 6.7 C. -0.5 D. 8.9

Mathematics

Simplify.

A.
B.
C. 12
D. 1

Mathematics

Solve the problem.Let f(x) = cos x, g(x) = x - ?/2, and h(x) = 4x. Find f(h(g(x))).

A. 4 cos(x - ?/2) B. cos(4x - ?/2) C. cos(4[x - ?/2]) D. 4 cos(4[x - ?/2])

Mathematics

Perform the indicated operation and write the answer in the form  where a and b are real numbers.(8 + 4i)(2 + 9i)

A. -20 - 80i B. 52 - 64i C. 36i2 + 80i + 16 D. -20 + 80i

Mathematics