.The solution to the equation x+86=140 represents the number of points Rafael needs to earn to reach his target in a video game. How many points does Rafael need to earn? Show the work used to determine the answer.

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.