please help. it is a 2 question problem

Just Company is considering a project requiring a $500,000 investment. The project would provide income each year for nine years as follows: What is the (approximate) payback period of this project? A. 3.85 years B. 8.33 years C. 2 years D. 2.78 years Use the information given inteh above question. Further assume that the discount rate is 15%. What is the (approximate) profitability index of the project? A. 1.24 B. 0.85 C. 1.47 D. 0.57