Duela Dent is single and had $189,000 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.) Average tax rate b. Marginal tax rate TABLE 2.3 Taxable income Tax Rate 10% Personal tax rates for 2018 (unmarried individuals) $ 0- 9,525 9,525- 38,700 38,700- 82,500 82,500- 157,500 157,500- 200,000 200,000- 500,000 500,000+