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Re:Calculus in SaaS by molsongolden on Friday September 25, 2020 @08:52PM (#24595516)
As noted in other comments, the $720 of recognized revenue is off and should instead be $60.

Assuming $10 of ARR is added each month:

> y = 10x where y = ARR and x = time in months

needs to instead be

> y = (10/12)x where y = MRR and x = time in months

ARR is increasing 10 per month but MRR is increasing 10/12 per month.

The height of the triangle is 10 at the end of the year since the height is MRR.

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