Please answer both parts

13b. Assume Stock B currently pays no dividends today but is expected to begin paying dividends $6 per share in 5 years. The dividends are expected to have a constant growth rate of 6% at that time and the firm has a cost of equity of 12.1%. Using the dividend discount model, what do you estimate the share price should be?

13c. Let's say Firm A is assumed to have a dividend growth rate of 20% for the next three years, then 5% per year afterward. The cost of equity is assumed to be 15%. Assume that the stock recently paid a dividend of $9. Compute the value of the stock.