$1.$ Phillips Company will pay a dividend of $2\mathrm{.}60$ TL next year. Dividends will grow at a constant annual rate of $8\%.$ The price of the shares is $20$ TL$.$ The cost of issuing shares is $15\%$ of the issue price. If the corporate tax rate is $35\%,$ calculate the cost of retained earnings and the cost of new equity.

$2.$ Baxter Company's target capital structure consists of $30\%$ debt, $15\%$ preferred stock, and $55\%$ equity. The after$-$tax cost of debt is $7\%,$ the cost of preferred stock is $11\%,$ the cost of retained earnings is $15\%,$ and the cost of new equity is $16\%.$ If the company's beta is $1\mathrm{.}5$ and the tax rate is $35\%,$ and only retained earnings will be used in equity, calculate the weighted average cost of capital $($WACC$).$

$3.$ Calculate the weighted average cost of capital $($WACC$)$ for S&G Company. The corporate tax rate is $40\%.$

o Capital Structure Weight Pre$-$Tax Cost

o Bonds $40\%7\mathrm{.}5\%$

o Preferred Stock $5\%11\%$

o Common Stock $55\%15\%$

$4.$ B$.$ Company's capital structure consists of $70\%$ debt and $30\%$ equity. The pre$-$tax cost of debt is $12\%,$ and the tax rate is $30\%.$ The company will pay a dividend of $2$ TL at the end of the first year $($D$1).$ Dividends will grow by $5\%$ each year. The stock price is $10$ TL$.$ The cost of issuing shares is $2$ TL per share. The company's equity will consist entirely of new shares. Calculate the cost of equity. Calculate the weighted average cost of capital $($WACC$).$