Answer:
a. 1.5
b. Required rate of return would increase by 3% to 12%
Step-by-step explanation:
a. According to the Capital Asset Pricing Model,
Required return = Risk free rate + beta *market premium
9% = 4.5% + beta * 3%
Beta * 3% = 9% - 4.5%
Beta = (9% - 4.5%)/3%
= 1.5
b.
= 4.5% + 1.5 * 5%
= 12%
The required return would increase by 3%