Click here to read the eBook: Income Taxes PERSONAL TAXES Susan and Stan Britton are a married couple who file a joint income tax return, where the tax rates are based on the tax table 3.5. Assume that their taxable income this year was $282,000. Round your answers to two decimal places. a. What is their federal tax liability? $ b. What is their marginal tax rate? 9% c. What is their average tax rate? 06