I need help with these questions if possible how to solve it in different ways

1.Stock Values The Jackson-Timberlake Wardrobe Co. just paid a dividend of $1.95 per share on its stock. The dividends are expected to grow at a constant rate of 4 percent per year indefinitely. If investors require a return of 10.5 percent on The Jackson-Timberlake Wardrobe Co. stock, what is the current price? What will the price be in three years? In 15 years?

6. Stock Valuation [LO1] Tell Me Why Co. is expected to maintain a constant 3.9 percent growth rate in its dividends indefinitely. If the company has a dividend yield of 5.9 percent, what is the required return on the company's stock?