Determine the tax liability, marginal tax rate, and average tax rate in each of the following cases. Use the Tax Tables and tax rate schedules to compute tax liability. Required: a. Single taxpayer, taxable income of $32,716. b. Single taxpayer, taxable income of $98,263. Note: For all requirements, round "Average tax rate" to 2 decimal places. Tax liability a. b. Marginal tax rate Average tax rate % % % %