A portfolio is composed of two stocks, A and B. Stock A has an expected return of 12% while stock B has an expected return of 15%. Stock A has a standard deviation of return of 5% while stock B has a standard deviation of return of 15%. The correlation coefficient between the returns on A and B is 0.8. Stock A comprises 30% of the portfolio while stock B comprises 70% of the portfolio. Please show your detailed work and don't write numbers without putting a label as to what they are. Be careful when you write "=" sign only when the two things on either side of it are equal.

Find the expected return for the portfolio.

Find the variance of the portfolio.