Factor 60y-90-20x60y−90−20x60, y, minus, 90, minus, 20, x to identify the equivalent expressions. Choose 2 answers:

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.