Malik Dukes has $300,000 invested in a 2-stock portfolio. $202,500 is invested in Stock X and the remainder is invested in Stock Y. X's beta is 1.50 and Y's beta is 0.70. What is the portfolio's beta? Do not round your intermediate calculations. Round the final answer to 2 decimal places. O a. 1.24 O b. 0.79 O c. 0.62 O d. 0.48 O e. 1.10 Cooley Company's stock has a beta of 0.80, the risk-free rate is 1.90%, and the market risk premium is 5.50%. What is the firm's required rate of return? Do not round your intermediate calculations. O a. 7.40% O b. 6.30% O c. 5.92% O d. 7.02% O e. 4.40%