Please help me with these 3 problems. thank you

JustKidding Corporation has an odd dividend policy. The company has just paid a dividend of $7 per share and has announced that it will increase the dividend by $6 per share for each of the next five years, and then never pay another dividend. If you require a return of 14 percent on the company's stock, how much will you pay for a share today? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g. 32.16.) Mannix Corporation stock currently sells for $80 per share. The market requires a return of 9.8 percent on the firm's stock. If the company maintains a constant 2.9 percent growth rate in dividends, what was the most recent dividend per share paid on the stock? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) Burnett Corp. pays a constant $8.25 dividend on its stock. The company will maintain this dividend for the next 13 years and will then cease paying dividends forever. If the required return on this stock is 11.2 percent, what is the current share price? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)