An investment has a cost of $3500. The investment will have a payout at the end of the first year. This initial payout will grow at the rate of 12% per year for the next 4 years, then by 7% per year...

An investment has a cost of $3500. The investment will have a payout at the end of the first year.  This initial payout will grow at the rate of 12% per year for the next 4 years, then by 7% per year for the next 4 years, and then at the rate of 3% per year for the following 3 years.  You believe the riskiness of this investment is 9%.

What is the smallest payout that would make you want to invest?