Help asap need for test

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.

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound