P2-13. Thomsonetics, Inc., a rapidly growing early-stage technology company, had the pretax income noted below for calendar years 2010-2012. The firm was subject to corporate taxes consistent with the rates shown in Table 2.6. Year 2010 2011 2012 Pretax Income $ 87.000 312.000 760.000 c. a. Calculate Thomsonetics' tax liability for each year 2010, 2011, and 2012. b. What was the firm's average tax rate in each year? What was the firm's marginal tax rate in each year? d. If in addition to its ordinary pretax income, Thomsonetics realized a capital gain of $80,000 dur- ing calendar year 2011, what effect would this have on its tax liability, average tax rate, and mar- ginal tax rate in 2011? e. Which tax rate-average or marginal should Thomsonetics use in decision making? Why