15.2.2.20
Ratical functions

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.

Put the equation in slope intercept form by solving for y

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.