Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.x5 x-2

A. -x3
B. x3
C. - 
D.

Answer: B

Mathematics

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Find the average velocity of an object which follows the position function s(t) over the given interval.s(t) = 7t3 + 8t2 - 1, [-8, -4]

A.
B. - 
C. - 688
D. 688

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Solve the rational inequality and graph the solution set on a real number line. Express the solution set in interval notation. > 0

A. (-3, 0]

B. (0, ?)

C. (-?, -3) or (0, ?)

D. (-?, -3] or [0, ?)

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Evaluate the logarithm without the use of a calculator.log41

A. 0
B.
C. 4
D. 1

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Use transformations to graph the function.y = 2 cos x + 3

A.

B.

C.

D.

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Mathematics