What are the answer to the MC?

9) What are the x-coordinate(s) of the points of inflection for the graph of f(x) = sin? x on the closed interval [o,7]? A) x = 3x C) x = , only B) x = , x = 5, and x = 3x D) x = # and x = 3x 10) Given function f as defined below. 270 Which of the following statements are true for this function? I. Function f is continuous at x = 0. II. lim f(x) = lim f(x) 2-+0 III. lim f(x) = f(o) A) III, only B) I, II, and III D) I and 11, only 11) If f(x) = 3-2, then f'(x) = A) -7 B) 12x 1 D) 12x 1 1 (2x+ 1) (2x+1)2 (2z . 1)2