must raise additional capital to fund its upcoming expansion. The firm will have $$4$ million of retained earnings with common stock in an amount up to $$6$ million would have a cost of $r_e=11\mathrm{.}0\%.$ Furthermore, Olsen can raise up to interest rate of $r_d=9\%$ and an additional $$5$ million of debt at $r_d=11\%.$ The CFO estimates that a proposed expa investment of $$8\mathrm{.}6$ million. What is the WACC for the last dollar raised to complete the expansion? Round your ans