Please show work

4. The cost of retained earnings the required rate of If a firm cannot invest retained earnings to earn a rate of return return on retained earnings, it should return those funds to its stockholders. The current risk-free rate of return is 4.6%. The market risk premium is 6.6%. Allen Co. has a beta of 1.56. Using the Capital Asset Pricing Model (CAPM) approach, Allen's cost of equity is The cost of equity using the CAPM approach Kuhn Co. is closely held and, consequently, cannot generate reliable inputs for the CAPM approach. Kuhn's bonds yield 10.2%, and the firm's analysts estimate that the firm's risk premium on its stock over its bonds is 4.5%. Using the bond-yield-plus-risk-premium approach, find the firm's cost of equity o 18.4% o 17.6% O 14.7% o 14.0% The cost of equity using the Discounted Cashflow (or Dividend Growth) Approach Kirby Co.'s stock is currently selling for $45.56, and the firm expects its dividend to be $2.35 in one year. Analysts project the firm's growth rate to be constant at 7.2%, using the discounted cash flow (DCF) approach, what is Kirby's cost of equity