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Unformatted text preview: by 81 . 15 . ) ( 2 + = t t t C . When does the maximum concentration occur? 10. Commissioners of a certain city determine that when x million dollars are spent on controlling pollution, the percentage of pollution removed is given by 12 04 . 100 ) ( 2 + = x x x P What expenditure results in the largest percentage of pollution removal?...
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- Spring '97