Campbell, a single taxpayer, earns $406,000 in taxable income and $2,480 in interest from an investment in State of New York bonds. (Use the U.S. tax rate schedule) Required: a. If Campbell ears an additional S16,200 of taxable income, what is her marginal tax rate on this income? b. What is her marginal rate If, instead, she had $16,200 of additional deductions? (For all requirements, do not round intermediate calculations. Round percentage answers to whole percent.) a. Marginal tax rate b. Marginal tax rate Campbell, a single taxpayer, earns $406,000 in taxable income and $2,480 in interest from an investment in State of New York bonds. (Use the U.S. tax rate schedule) Required: a. If Campbell ears an additional S16,200 of taxable income, what is her marginal tax rate on this income? b. What is her marginal rate If, instead, she had $16,200 of additional deductions? (For all requirements, do not round intermediate calculations. Round percentage answers to whole percent.) a. Marginal tax rate b. Marginal tax rate