75 liters of cranberry juice 3.5 liters of pineapple juice and 4.2 liters of orange juice for punch for a party. how many liters of punch will this make?

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.