2. At a local maximum point f '(x) = 0. 4. If f '(x) = 0 and f \"(x)

2. At a local maximum point f '(x) a) always b) sometimes 3. Iff '(x) = 0, then the point (x, f(x)) is an extreme point. a) always b) sometimes 4. Iff '(x) = O and f "(x) < 0, then the point (x, f(x)) is a local minimum. a) always b) sometimes c) never c) never c) never -5t2 + 30t. 5. The impact velocity given the height function h(t) = b) -10 c) -30 6. The acceleration of the position function s(t) = 4t2 8t + 2 when t = 7 b) 48 c) 142