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Bob Owns a Watch Repair Shop c(x)=4x2−288x+50c ( x ) = 4 x ^ { 2 } - 288 x + 50

question 211

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Bob owns a watch repair shop. He has found that the cost of operating his shop is given by c(x) =4x2−288x+50c ( x ) = 4 x ^ { 2 } - 288 x + 50 where x is the number of watches repaired. How many watches must he repair to have the lowest cost?

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