Jerry is paving the parking . it cost $50 for each square meter. the height is 6 1/4 the width is 4. what is the cost of the pave for the parking spot

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.