Idaho Engineering Inc. has a target capital structure of 20% debt, 10% preferred stock and 70% common stock. The interest rate on new debt is 4.4%, the yield on preferred stock is 8% and the cost of retained earnings is 14%. The firm will not be issuing any new stock, and the tax rate is 37%. Attempt 4/20 for 10 pts. What is the company's pre-tax weighted average cost of capital? Attempt 1/20 for 10 pts. What is the company's after-tax weighted average cost of capital