The circumference of a circular field is 295.16 yards what is the radius of the field use 3.14 for pi and do not round your answer

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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.

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?