Question 3 Assume that John's marginal tax rate is 37 percent. If a city of Austin bond pays 6.5 percent interest, what interest rate would a corporate bond have to offer for John to be indifferent between the two bonds? Question 4 Marc, & married taxpayer, earns 5640,000 in taxable income and $8,300 in interest from an investment in city of Birmingham bonds. Using the U.S. tax rate schedule for year 2022, what is his current marginal tax rate? (Use tax rate schedule.)