In the short run, a firm's total costs of producing the hundredth unit of output equal $8 comma 000. If it produces one more unit, its total costs will increase to $8 comma 100. Part 2 What is the marginal cost of the 101 Superscript st unit of output? $ 100 (Round your answer to the nearest cent.) Part 3 What is the firm's average total cost of producing 100 units? $ enter your response here (Round your answer to the nearest cent.)