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. C'(x)- 1,200 x2 C(100)-22 Find the average cost function and the cost function. What are the fixed costs? The average cost function is C(x)= The cost function is C(x)-- The fixed costs are $ Enter your answer in each of the answer boxes. 5 MacBook Pro