show me the steps please not inthe excl

-An investor invests 40% of his wealth in a risky asset with an expected rate of return of0.17 and a variance of 0.08 and 60% in a T-bill that pays 4.5%. His portfolio;s expected returnand standard deviation are and respectively. * 0.087; 0.068 O 0.095;0.113 O 0.114;0.126 0.087;0.124