Is this ROI correct based on percentage of units sold increase and percentage revenue increase?

How to calculate ROI in 12 month, 24 months and 36 months? (based on 10% units sold increase and 15% service revenue increase when current units sold = 1,000 and current service revenue = 100,000)

Cost units sold increase 10% service revenue increase 15% 12 month 24 month 36 month 1500 start up 1500 start up 1500 start up 3,000/month 3,000/month 3,000/month 36000 + 1500 72000 + 1500 108000 + 1500 37500 73500 109500 units sold increase current units sold: 1000 100 year 1 * compounded annually 15000 year 1 *compounded annually service revenue increase current service revenue: 100,000 year total units sold total service revenue year 1 1100 115,000 year 2 1210 year 3 1331 132250 152087.5 174900.625 201135.7188 year 4 1464.1 1610.51 year 5 ROI 12 month 24 month 44115000 10.01246883 36 month 92647250 15.52026185 146039337.5 21.39595802 Cost units sold increase 10% service revenue increase 15% 12 month 24 month 36 month 1500 start up 1500 start up 1500 start up 3,000/month 3,000/month 3,000/month 36000 + 1500 72000 + 1500 108000 + 1500 37500 73500 109500 units sold increase current units sold: 1000 100 year 1 * compounded annually 15000 year 1 *compounded annually service revenue increase current service revenue: 100,000 year total units sold total service revenue year 1 1100 115,000 year 2 1210 year 3 1331 132250 152087.5 174900.625 201135.7188 year 4 1464.1 1610.51 year 5 ROI 12 month 24 month 44115000 10.01246883 36 month 92647250 15.52026185 146039337.5 21.39595802