The marginal average cost of producing x digital sports watches is given by the function C'(x), where C(x) is the average cost in dollars. 1,500 C'(x) = - C(100) =23 *2 Find the average cost function and the cost function. What are the fixed costs? 1500 The average cost function is C(x) = + 8 X The cost function is C(x) =