Alexis is single and had $289,000 in taxable income. Use the rates from Table 2.3. a. What is the average tax rate? (Do not round Intermediate calculations and round your answer to 2 decimal palces, e.g., 32.16.) b. What is the marginal tax rate? (Do not round intermediate calculations and round your answer to the nearest whole number, e.g., 32.) % a. Average tax rate b. Marginal tax rate % Taxable income Tax Rate TABLE 2.3 Personal tax rates for 2018 (unmarried Individuals) $ 9,525 9.525- 38.700 38,700 82,500 82.500- 157,500 157.500- 200,000 200,000 - 500,000 500,000+ 10% 12 22 24 32 35 37