The relationship between marketing expenditures (x) and sales (y) is given by the following formula: y = 9x - 0.20x^2 + 8. (Hint: Use the Nonlinear Solver tool.) What level of marketing expenditure will maximize sales? (Round your answer to 2 decimal places.) What is the maximum sales value? (Round your answer to 2 decimal places.)
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20x^2 + 8. The derivative of this function is dy/dx = 9 - 0.40x. Show more…
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