13 manns eBook Olsen Outfitters Inc. believes that its optimal capital structure consists of 70% common equity and 30% debt, and its tax rate is 40%. Oisen must raise additional capital to fund its upcoming expansion. The firm will have $4 million of retained earnings with a cost of rs = 12%. New common stock in an amount up to $8 million would have a cost of re- 13.5%. Furthermore, Olsen can raise up to $4 million of debt at an interest rate of d = 9% and an additional $5 million of debt at Ta = 17%. The CFO estimates that a proposed expansion would require an investment of $6.4 million. What is the WACC for the last dollar raised to complete the expansion? Round your answer to two decimal places