Tantor Supply, Inc., is a small corporation acting as the exclusive distributor of a major line of sporting goods. During 2013 the firm earned $92, 200 before taxes. a. Calculate the firm's tax liability using the corporate tax rate schedule given in the following Table b. How much are Tantor Supply's 2013 after-tax earnings? c. What is the firm's average tax rate, based on your findings in part (a)? d. What is the firm's marginal tax rate, based on your findings in part (a)? a. The firm's tax liability is $ (Round to the nearest dollar.) b. The firm's after-tax earnings is $ (Round to the nearest dollar.) c. The firm's average tax rate is %. (Round to one decimal place.) d. The firm's marginal tax rate is %. (Round to the nearest integer.)