Mudvayne, Inc., is trying to determine its cost of debt. The fi rm has a debt issue outstanding with 18 years to maturity that is quoted at 107 percent of face value. The issue makes semiannual payments and has an embedded cost of 6 percent annually. What is the company’s pretax cost of debt? If the tax rate is 35 percent, what is the aftertax cost of debt? Solve for the rate using the rate function in Excel. Enter the present value as a negative.