Suppose that f is a function given as f(x) = 3x -5x - 2. Simplify the expression f(x + h). f(x + h) = Simplify the difference quotient, f(x+h)-f(x) h f(a+h)-f(x) h The derivative of the function at a is the limit of the difference quotient as h approaches zero. f(a+h)-f(x) h f'(x) = lim A-0