Handwritten assistance for this question is appreciated! My professor provided the answer, but my work is not leading to the correct answer. I need to be able to work this problem without using Excel. I also need to see the step by step solution to identify where I am going wrong. Thank you for any assistance!

The realized returns for the market and Stock J for the last three years are given below:

Year Market Stock J

1 5% 7%

2 10% 14%

3 15% 21%

An average stock has an expected return of 10% and the risk-free rate is 4%. What is Stock J's required rate of return?