Dear tutor,

I need to know how to get to the solution step by step, please.

1)T. Martell Inc.'s stock has a 50% chance of producing a 30% return, a 25% chance of producing a 9% return, and a 25% chance of producing a -25% return. What is Martell's expected return.

2)An investor has a 2-stock portfolio with $50,000 invested in Palmer Manufacturing and $50,000 in Nickles Corporation. Palmers beta is 1.20 and Nickles beta is 1.00. What is the portfolio's beta?