Help Scot and Vidia, married taxpayers, earn $42,000 in taxable income and $5,000 in interest from an investment in City of Tampa bonds. (Use the U.S. tax rate schedule for married filing jointly). Required: a. If Scot and Vidia earn an additional $31,250 of taxable income, what is their marginal tax rate on this income? b. What is their marginal rate if, instead, they report an additional $31,250 in deductions? For all requirements, do not round intermediate calculations. Round your answer to 2 decimal places.) Marginal tax rate Marginal tax rate Prey, 1 of 12 Next >