please help me with both! thank you!

Kollo Enterprises has a beta of 0.80, the real risk-free rate is 2.25%, investors expect a 3.00% future inflation rate, and the market risk premium is 4.70%. What is Kollo's required rate of return? Do not round your intermediate calculations. O a. 8.41% O b. 6.7696 C. 8.90% O d. 9.0196 O e. 7.96% Carson Inc.'s manager believes that economic conditions during the next year will be strong, normal, or weak, and she thinks that the firm's returns will have the probability distribution shown below. What's the standard deviation of the estimated returns? (Hint: Use the formula for the standard deviation of a population, not a sample.) Do not round your intermediate calculations. Economic Conditions Prob. Return 30% 40.0% Strong Normal 40% 13.0% Weak 30% -18.0% O a. 12.9896 O b. 15.90% C. 23.7096 O d. 22.48% O e. 29.0296