Solve the problem.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. 28 watches
B. 30 watches
C. 57 watches
D. 31 watches


Answer: D

Mathematics

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Solve the inequality and graph the solution set. ? 2

A.

B.

C.

D.

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