Suppose f(x) and f'(x) are continuous but restricted to the interval 0 < x < 20, and assume the values of f'(x) are as shown. For each value, determine whether there is a local maximum, local minimum, or nothing. 0 5 10 15 20 f'(x) 3 -8 3 0 6 At x = 0, you guarantee Select an answer At x=5, you guarantee Select an answer At x=10, you guarantee Select an answer = At 15, you guarantee Select an answer At x=20, you guarantee Select an answer