Viserion, Inc., is trying to determine its cost of debt. The firm has a debt issue outstanding with 14 years to maturity which is quoted at 105 percent of face value. The issue makes semiannual payments and has an embedded cost of 6 percent annually. 

a). What is the company’s pretax cost of debt? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) 

b). If the tax rate is 23 percent, what is the after-tax cost of debt?