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Bob Owns a Watch Repair Shop c(x)=2x2−148x+85c(x)=2 x^{2}-148 x+85 , Where xx

Question 275

Multiple Choice

Bob owns a watch repair shop. He has found that the cost of operating his shop is given by c(x) =2x2−148x+85c(x) =2 x^{2}-148 x+85 , where xx is the number of watches repaired. How many watches must he repair to have the lowest cost?


A) 20 watches
B) 42 watches
C) 85 watches
D) 37 watches

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