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Mathematics, 21.06.2019 16:50 Kianna000

Suppose that the price p​ (in dollars) and the weekly sales x​ (in thousands of​ units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80​, pequals20​, and the price is falling at the rate of ​$.20 per week.

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Suppose that the price p​ (in dollars) and the weekly sales x​ (in thousands of​ units) of a certain...
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