Aaron is a member of her school track team last week she ran in 8 1/2 laps around the track in 30 minutes this week and ran for 30 minutes at a constant rate of 2 1/2 minutes per lap how many more left a tear in the run this week than last week

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.