please please solve both Questions in 30 minutes

QUESTION 20 Starbucks Corporation (SBUX) has a stock price of $71.89. The firm paid a dividend of $5 at the end of last year. The dividend is expected to grow at 2.696 for this year and thereafter. What is your estimate for Sentra's cost of equity? O a. 5.7996 O b. 8.9696 O c. 7.3596 O d. 9.7496 QUESTION 18 Which of the following statements is correct? O a. The volatility of an individual stock is always less than the volatility of a well-diversified portfolio of stocks, b. When we combine stocks in a portfolio, the amount of risk that is eliminated depends on the degree to which the stocks move together. c. When we form an equally weighted portfolio of stocks and keep increasing the number of stocks in the portfolio, the O volatility of the portfolio increases. O d. Diversification does not change the risk of a portfolio because stocks movements are fully predictable