You are given the following information for Ted's Dread Co.: sales = $68,500; costs = $51,700; addition to retained earnings = $4,500; dividends paid = $3,420; interest expense = $2,130; tax rate = 21 percent. Calculate the depreciation expense. (Do not round intermediate calculations and round your answer to the nearest whole number, e.g., 32.) Depreciation expense 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.) a. Average tax rate b. Marginal tax rate % %