Let g(x) = f(t)dt, where f is the function whose graph is shown. 3- 3 12 18 (a) Evaluate g(x) for x = 0, 3, 6, 9, 12, 15, and 18. g(0) = 0 9(3) = 4.5 g(6) = 0 9(9) = -4.5 g(12) = 0 9(15) = 13.5 g(18) = X (b) Estimate g(21). (Use midpoint to get the most precise estimate.) 9(21) = X (c) Where does g have a maximum and a minimum value? minimum at x = 9 maximum at x = X