Directions: Find the value of x.

5x-2 || 3x+4 || LOOK AT PICTURE PLEASE

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.

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

100 points? me its important ‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️