Omar wants to determine cos

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.

True or false? a circle could be circumscribed about the quadrilateral below.

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?