Hi, please solve this problem :) Thanks for your time!

Quantitative Problem:

A.) 5 years ago, Barton Industries issued 25-year noncallable, semiannual bonds with a $1,550 face value and a 6% coupon, semiannual payment ($46.5 payment every 6 months). The bonds currently sell for $845.87. If the firm's marginal tax rate is 40%, what is the firm's after-tax cost of debt? Round your answer to 2 decimal places. Do not round intermediate calculations.

B.) Barton Industries expects next year's annual dividend, D₁, to be $2.30 and it expects dividends to grow at a constant rate g = 4.6%. The firm's current common stock price, P₀, is $20.50. If it needs to issue new common stock, the firm will encounter a 4.9% flotation cost, F. Assume that the cost of equity calculated without the flotation adjustment is 12% and the cost of old common equity is 11.5%. What is the flotation cost adjustment that must be added to its cost of retained earnings? Round your answer to 2 decimal places. Do not round intermediate calculations

C.) What is the cost of new common equity considering the estimate made from the three estimation methodologies? Round your answer to 2 decimal places. Do not round intermediate calculations.

D.) Barton Industries expects that its target capital structure for raising funds in the future for its capital budget will consist of 40% debt, 5% preferred stock, and 55% common equity. Note that the firm's marginal tax rate is 40%. Assume that the firm's cost of debt, r_d, is 7.5%, the firm's cost of preferred stock, r_p, is 7% and the firm's cost of equity is 11.5% for old equity, r_s, and 12.2% for new equity, r_e. What is the firm's weighted average cost of capital (WACC₁) if it uses retained earnings as its source of common equity? Round your answer to 3 decimal places. Do not round intermadiate calculations.

E.) What is the firms weighted average cost of capital (WACC₂) if it has to issue new common stock? Round your answer to 3 decimal places. Do not round intermadiate calculations.