Suppose that an equation is given p = −2x2 + 276x − 1000, where x represents the number of items sold at an auction and p is the
profit made by the business that ran the auction. How many items sold would make this profit a maximum? Solve this by graphing the expression in your graphing utility and finding the maximum using 2nd CALC maximum or, for the TI-89, F5 for the math menu and 4:Maximum. To obtain a good window for the curve, set x [0, 200] and y [0, 10000].
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