2021 tax

Campbell, a single taxpayer, eams $400,000 in taxable income and $2.000 in interest from an investment in State of New York bonds (Use the US tax rate schedule Required: a. Il Campbell earns an additional $15,000 of taxable income, what is her marginal tax rate on this income? b. What is her marginal rate it instead, she had $15,000 of additional deductions? (For all requirements, do not round intermediate calculations. Round percentage answers to whole percent.) a Marginal tax rate Marginal tax rate