please help me with these questions

"Find the Cooper Enterprises' cost of equity if its beta is 1.2 , the risk-free rate is 4%, and the market return is 11%. " Selected Answer: [ None Given] Correct Answer: 12.4% Question 5 0 out of 10 points Maki Corp.'s 17\% coupon 10-year bonds currently trade for $900. Find the firm's after-tax cost of debt if the tax rate is 40%. Selected Answer: 12.23% Correct Answer: 11.58% Question 6 10 out of 10 points "Maki Corp.'s 10-year bonds are rated AA. Given the information below, find the firm's cost of debt. " Question 7 0 out of 10 points "Yellowtail Corp. has 80M shares outstanding priced at $20 per share and $700M of debt. What s the WACC if the tax rate is 30%, cost of debt is 8%, and cost of equity is 13%? Selected Answer: [None Given] Correct Answer: 10.75% Question 8 0 out of 10 points "Given the folllowing liability portion of the balance sheet and the market value of equity of $100M, what would be the weight of debt in the wacc formula? All numbers are in millions of \$