need help with these questions please

Question 18 (4 points) You are considering buying common stock in Grow On, Inc. You have projected that the next dividend the company will pay will equal $3.20 and that dividends will grow at a rate of 5.0% per year thereafter. The firm's beta is 1.65, the risk-free rate is 7.0%, and the market return is 13.8%. What is the most you should pay for the stock now? O$24.21 O $25.42 $17.56 $18.44 $26.45 Question 21 (4 points) Costly Corporation plans a new issue of bonds with a par value of $1000, a maturity of 39 years, and an annual coupon rate of 15.0%. Flotation costs associated with a new debt issue would equal 7.0% of the market value of the bonds. Currently, the appropriate discount rate for bonds of firms similar to Costly is 19.0%. The firm's marginal tax rate is 40%. What will the firm's true cost of debt be for this new bond issue? 22.94% 20.43% 16.14% 9.68% 12.26% Question 25 (4 points) Marginal Incorporated (MI) has determined that its after-tax cost of debt is 4.0% for the first $48 million in bonds it issues, and 8.0% for any bonds issued above $48 million. Its cost of preferred stock is 12.0%. Its cost of internal equity is 17.0%, and its cost of external equity is 20.0%. Currently, the firm's capital structure has $285 million of debt, $65 million of preferred stock, and $150 million of common equity. The firm's marginal tax rate is 35%. The firm's managers have determined that the firm should have $63 million available from retained earnings for investment purposes next period. What is the firm's marginal cost of capital at a total investment level of $50 million? 10.52% 12.12% 11.22% 9.84% 08.94% 9.62% 8.14% 9.04%