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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.

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

Factor the polynomial expression x6 – x3 – 20