The answer is 562.754405
The total amount she will have to pay back in four years is. 562.754405
Answer: ER(P) = Rf + β(Rm-Rf)
6 = 5 + β(17-5)
6 = 5 + β(12 )
6 - 5 = 12β
1 = 12β
β = 1/12
β = 0.083
Explanation: In determining the Beta of the stock, we need to apply capital asset pricing formula and then make Beta the subject of the formula. Other variables will be substituted with the exception of Beta, which becomes the subject of the formula.