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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.

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122