Please show the steps(formulas) of calculation

Blueberry Corporation expects to have earnings this coming year of $5.00 per share. Blueberry plans to retain all of its earnings for the next two years. For the subsequent two years the firm will retain 75% of its earnings. It will then retain 50% of its earnings from that point onward. Each year, retained earnings will be invested in new projects with an expected return of 15% per year. Any earnings that are not retained will be paid out as dividends. Assume Blueberry's share count remains constant and all earnings growth comes from the investment of retained earnings. Blueberry's equity cost of capital is 12% p.a a. What are the earnings and dividends over the first two years? (6 marks) b. At what rate will the earnings and dividends grow in year 3 onwards? What is the dividend at year 3? (4 marks) c. What price would you estimate for Blueberry stock? (7 marks) d. Now you expect the firm to pay all of its earnings as dividends at the end of year 4 onwards. Without doing any calculations, can you conclude that the share price increases, decreases, or stays the same compared to your answer in (a)? Explain your answer. (4 marks)