16. Given the graph of f' shown below, determine the interval where the function f (not pictured) is BOTH increasing and concave down. a b c diex [A] (c, d) [B] (a,c) (b,d) [D] (c,e) : [E] (d,e) 17. The graphs of f, f', and f" are given below. Which of the following correctly lists the functions in the order f, f', and f" ? Hint: The x-value at which function I reaches its maximum is a good place to investigate, but be careful not to jump to your conclusion too quickly. [A] I, III, II [B] II, I, III [C] III, I, II [D] I, II, III [E] III, II, I 5 | Page