you want to replace the carpet in the hallway. you checked with various stores and found that the best deal was given by a company who will charge you $3.49 per square foot. calculate the total cost of the carpet.

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.