Help Pls! I am running out of points it is due in 1 hour I have tired option one and 2 and both wrong pls help.
btw I have tried answering option one or 2.

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.