Check my work 3 2 points Skipped eBook Campbell, a single taxpayer, earns $403,500 in taxable income and $2,280 in interest from an investment in State of New York bonds. (Use the U.S. tax rate schedule). Required: a. If Campbell earns an additional $15,700 of taxable income, what is her marginal tax rate on this income? b. What is her marginal rate if, instead, she had $15,700 of additional deductions? Note: For all requirements, do not round intermediate calculations. Round percentage answers to whole percent. a. Marginal tax rate % b. Marginal tax rate % Print References Check my work 4 2.25 points Skipped eBook Melinda invests $300,000 in a City of Heflin bond that pays 4.5 percent interest. Alternatively, Melinda could have invested the $300,000 in a bond recently issued by Surething Incorporated that pays 6 percent interest and has risk and other nontax characteristics similar to the City of Heflin bond. Assume Melinda's marginal tax rate is 25 percent. Note: Leave no cells blank - be sure to enter "O" wherever required. Round your after-tax rate of return to one decimal place. Required: a. What is her after-tax rate of return for the City of Heflin bond? b. How much explicit tax does Melinda pay on the City of Heflin bond? c. How much implicit tax does she pay on the City of Heflin bond? d. How much explicit tax would she have paid on the Surething Incorporated bond? e. What is her after-tax rate of return on the Surething Incorporated bond? Hint a. After-tax rate of return b. Explicit tax % Print c. Implicit tax d. Explicit tax e. After-tax rate of return % References