I am confused with these questions - I have plugged the numbers into the formula, but I am not coming out with any of the answer options .

The first formula is for the Expected Return on a Portfolio and the second formula is the Expected Portfolio Risk.

34. a. What is the expected return of a portfolio with 25% invested in UK stock and 75% in the U.S. if the U.S. return was 15% and the UK was 12%? 12.75 b. 13.50 14.25 d. 16.50 c. 35. What is the portfolio risk of the portfolio in the question above if the correlation between the U.S. and the U.K. is.33, the standard deviation of the UK stock is 9% and the U.S.is 10%? 7.93 b. 7.75 8.51 d. 12.75 a. c. R, = arus +(1-arm or=[aos +(1-a)?omn +20(1a)ousome.]