Intro Idaho Engineering Inc. has a target capital structure of 22% debt, 10% preferred stock and 68% common stock. The interest rate on new debt is 5.1%, the yield on preferred stock is 8% and the cost of retained earnings is 13%. The firm will not be issuing any new stock, and the tax rate is 39%. Part 1 Attempt 175 for 2 pts. What is the company's weighted average cost of capital? 3+ decimals