please show how to do it on the calculator, not excel

T UNS below (#8 not optional). Work process is required. Firm Z has a capital structure that consists of 30% common stock and dompany has 15-year bonds outstanding with semi-annual coupon of 8%. The nsists of 30% common stock and 70% LT debt. The at $966.24 now. The risk-free rate is 5%. The market risk premium is 4%. The semi-annual coupon of 8%. The bonds are selling 1.1. The company's tax rate is 21%. Given this information, what is firm's WA What is the purpose of senciti