4. The firm's tax rate is 30%, and the market value of debt is $600 million. Given this and the information in parts 1-3, calculate the firm's weighted average cost of capital. (6 points) 3. Solaris' bonds have a coupon rate of 9%, paid semi-annually. The bonds mature in 20 years, have a face value of $1,000, and a price of $950. Calculate the firm's cost of debt, kb. (4 points) 4. The firm's tax rate is 30%, and the market value of debt is $600 million. Given this and the information in parts 1-3, calculate the firm's weighted average cost of capital. (6 points) 4. The firm's tax rate is 30%, and the market value of debt is $600 million. Given this and the information in parts 1-3, calculate the firm's weighted average cost of capital. (6 points) 3. Solaris' bonds have a coupon rate of 9%, paid semi-annually. The bonds mature in 20 years, have a face value of $1,000, and a price of $950. Calculate the firm's cost of debt, kb. (4 points) 4. The firm's tax rate is 30%, and the market value of debt is $600 million. Given this and the information in parts 1-3, calculate the firm's weighted average cost of capital. (6 points)