Mark bought a double oven electric range for 1350 he made a 15% down payment and finance the balance paying 150 a month for 10 months how much did mark pay for all the range

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.