Answer:
Step-by-step explanation:
CAPM: required return on equity = risk free rate + beta*(market risk premium)
market risk premium = expected market return - risk free rate
(7.2+1.5)=x(8.3-1.5)+1.5
x= 1.06
if this is wrong (as the term "risk premium" is kinda weird) try
x= .84
2.) 2.2+.8(8.9-2.2)= 7.56%
Since the expected return is greater you should buy it!