F (x + h) – f (2) Find the difference quotient,
f (2) , for the function, f (0) = x2 + 3x – 1.
h
Simplify your 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.