Please explain in as much detail as possible, I'm trying to study for the final and want to understand these questions. Thank you so much

2. Charlotte's Crochet Shoppe has 13,100 shares of common stock outstanding at a price per share of $71 and a rate of return of 11.45%. The company also has 400 bonds outstanding, with a par value of $1000 per bond. The pretax cost of debt is 6.05% and the bonds sell for 96% of the par. What is the firm's weighted average cost of capital (WACC) if the tax rate is 21%