need help thamks!

4. Blue Mamba bed and breakfast uses equity and debt in their capital structure (no preferred). They target 32% as their preferred debt percentage. Their marginal tax rate is 25% and their before tax cost of debt is 7.5%. Their beta is 2.5. The 3 month treasury rate is 2.3% and the S\&P 500 return is expected to be be 7.3%. What is Black Mamba's weighted average cost of capital (WACC)? Post your result to two decimal places