Given $4000 of start-up capital, what can you do? NumYearsAtWork = # of years at work YearsRevUpTime = 2 Income = ( NumYearsAtWork - YearsRevUpTime) * 120,000 / years^2 In my case, NumYearsAtWork = .5. So Income = (.5 years - 2 years) * 120,000 / years^2