Please solve three steps, thanks

(i) Describe and interpret the assumptions related to the problem.

(ii) Apply the appropriate mathematical model to solve the problem.

(iii) Calculate the correct solution to the problem. Submit all answers as percentages and round to two decimal places

1. CosaNostra Pizza is undergoing a major expansion. The expansion will be financed by issuing new 30-year, $1,000 par, 10% semiannual coupon bonds. The market price of the bonds is $1,020 each. Flotation expense on the new bonds will be $70 per bond. The marginal tax rate is 35%. What is the post-tax cost of debt for the newly-issued bonds? 2. Fedland Inc. will issue new common stock to finance an expansion. The existing common stock just paid a $6.80 dividend, with dividends expected to grow at a constant rate of 4% indefinitely. The stock sells for $40.00 and flotation expenses of 12% of the selling price will be incurred on new shares. What is the cost of new common stock