(1 point) For the following function whose graph is shown, choose the graph below that corresponds to its derivative. (click on image to enlarge) y=f(x) (click on images to enlarge) (8) (b) Li (C) (d) 4 Select correct option from below. ? v (1 point) Let f (x) be the function whose graph is shown below. -1 1-" a -1 Determine f'(a) for a = 1,2,4,7. f'(1) = M) = W) = f'(7) = (1 point) Suppose that the cost of manufacturing x pairs of shoes is C = f (x) dollars. (a) What are the units of f '(x)? (Write each word in its entirety, in lower case). Units: / (b) If you've already manufactured 570 pairs, estimate the cost of manufacturing an additional pair if f '(570) = 900. Cost