The daily cost to manufacture generic trinkets for gullible tourists is given by the cost function C(x) = -0.001x2+ 0.5x + 570 dollars, where x is the number of trinkets. (a) Find C'(x). C' (x ) = -0.002x + 0.5 That's it! As x increases, the marginal cost does which of the following? increases decreases O increases then decreases decreases then increases Amazing work. (b) Find C(x). C(x) = -0.001x + 0.5 + 570 X X As x increases, the average cost does which of the following? O increases O decreases O increases then decreases O decreases then increases