7. Problem 3.08 (Personal Taxes) eBook Problem Walk-Through 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 $218,000. Do not round Intermediate calculation 2. What is the federal tax Wabuty? Round your answer to the nearest dollar. 1 b. What is their marginal tax rate? Round your answer to the nearest whole number What is their average tax rate Round your answer to two decimal places