Problem 31-38 After-tax yields Suppose you are a wealthy individual paying 35\% tax on income. What is the expected after-tax yield on each of the following investments? a. A municipal note yielding 7.4% pretax. b. A Treasury bill yielding 11.6% pretax. c. A floating-rate preferred stock yielding 7.8% pretax. How would your answer change if the investor is a corporation paying tax at 35% ? Note: For all requirements, do not round intermediate calculations. Round your answers to 4 decimal places