a juice company has found that the marginal cost of producing x pints of fresh-squeezed orange juice is given by the function below, where c'(x) is in dollars.
approximate the total cost of producing 255 pt of juice, using 3 subintervals over [0,255) and the left endpoint of each subinterval.
c'(x) = 0.4x? -0.002x + 2, for x 5 350