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. 20 watches
B. 30 watches
C. 61 watches
D. 41 watches
Answer: D
Mathematics
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Find the distance in the xy-plane between the two points. Round an approximate result to the nearest hundredth.(12, 0) and (0, 16)
A. 40 B. 20 C. 4 D. 4.47
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Use the appropriate formula to solve the problem.The length of a rectangular billboard is 9 inches more than the width. The perimeter of the billboard is 146 inches. Find the width of the billboard.
A. 41 in. B. 9 in. C. 36 in. D. 32 in.
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Simplify.
3
A. 
B. 
C. 
D. 
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