Solve the problem.Find f(k - 1) when f(x) = 3x2 - 4x - 1.

A. 3k2 - 10k + 6
B. -10k2 + 3k + 6
C. 3k2 - 7k - 2
D. 3k2 - 10k - 2


Answer: A

Mathematics

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A.
B.
C.
D. 1

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Rationalize the denominator. If any variables are present, assume that they represent nonnegative numbers, and assume that the denominator is not zero.

A.
B.
C.
D.

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Solve.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by  where c is cost and x is the number of watches repaired. How many watches must he repair to have the lowest cost?

A. 48 watches B. 20 watches C. 29 watches D. 58 watches

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Divide.

A. -2x10 B. 2x10 C. -2x6 D. 2x6

Mathematics