6. You have a coupon for 15% off at an electronics store. If you buy a $120 tablet how much will you save? O A $18.00 B $16.85 O C. $102.00 D. $27.97

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.