retained earnings. Refer to the following table on bond issues for comparative yields on bonds of equal risk to Northwest. a. Compute the cost of debt, K. (Use the accompanying table-relate to the utility bond credit rating for yield.) (Do not round Intermedlate calculatlons. Input your answer as a percent rounded to 2 declmal places.) b. Compute the cost of preferred stock, Kp. (Do not round Intermedlate calculatlons. Input your answer as a percent rounded to 2 declmal places.) c. Compute the cost of common equity in the form of retained earnings. Ke. (Do not round Intermedlate calculations. Input your answer as a percent rounded to 2 decimal places.) d. Calculate the weighted cost of each source of capital and the weighted average cost of capital. (Do not round lntermedlate calculatlons. Input your answers os a percent rounded to 2 declmal places.) retained earnings. Refer to the following table on bond issues for comparative yields on bonds of equal risk to Northwest. a. Compute the cost of debt, K. (Use the accompanying table-relate to the utility bond credit rating for yield.) (Do not round Intermedlate calculatlons. Input your answer as a percent rounded to 2 declmal places.) b. Compute the cost of preferred stock, Kp. (Do not round Intermedlate calculatlons. Input your answer as a percent rounded to 2 declmal places.) c. Compute the cost of common equity in the form of retained earnings. Ke. (Do not round Intermedlate calculations. Input your answer as a percent rounded to 2 decimal places.) d. Calculate the weighted cost of each source of capital and the weighted average cost of capital. (Do not round lntermedlate calculatlons. Input your answers os a percent rounded to 2 declmal places.)