A stock has a beta of .9 and an expected return of 19 percent. A risk-free asset currently earns 5.0 percent. a. What is the expected return on a portfolio that is equally invested in the two assets? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places. Omit the "%" sign in your response.) Expected return % b. If a portfolio of the two assets has a beta of .44, what are the portfolio weights? (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places. Omit the "%" sign in your response.) Portfolio Weight xS % xrf % c. If a portfolio of the two assets has an expected return of 10.50 percent, what is its beta? (Do not round intermediate calculations. Round your answer to 4 decimal places.) Beta d. If a portfolio of the two assets has a beta of 1.21, what are the portfolio weights? (Negative values should be indicated by a minus sign. Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places. Omit the "%" sign in your response.) Porfolio Weight xS % xrf %