Investment science. please don't copy answer from other post, many thanks.

(Capital market line) Assume that the expected rate of return on the market portfolio is 8% and the rate of return on T-bills (the risk-free rate) is 2%. The standard deviation of the market is 30%. Assume that the market portfolio is efficient. (a) What is the equation of the capital market line? (b) (i) If an expected return of 10% is desired, what is the standard deviation of this position? (ii) If you have $3,000 to invest, how should you allocate it to achieve the above position? (c) If you invest $400 in the risk-free asset and $600 in the market portfolio, how much money should you expect to have at the end of the year