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)

 

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