I need the answer to b

A and B. A small world) Consider a world in which there are only two risky assets. and a risk-free asset F The two risky assets are in equal supply in the market; that is M = (A + B) The following information is known: ,F = 10, = 04, .18-01, -02. and-A-18 . (a) Find a general expression (without substituting values) for ., and (b) According to the CAPM, what are the numerical values of r^ and