with a BS in economics and minor in mathematics and currently working as an internal audit/compliance analyst.

Given Jerome Powell is looking to hit 2% inflation (not in the 2's, but 2.0%), and Shelter was 8.1% year-over-year in February, or about 3% of the total number, we either need shelter growth to cool dramatically, or everything else to come out at -1% with shelter contributing about 3%, bringing a total of 2% to hit Jerome's target (unlikely scenario, but mathematically possible).

You can't shop PMI, to my knowledge.Just speculating here: the mathematical model to come up with cash flow is the relatively easy part. 

Also, as you grow REALLY big, your risk starts to go down with economies of scaleStress is a factor of emotion, not mathematics.

I won't go into a long post on the mathematics and the reasoning banks would use before foreclosing on a portfolio of 400 houses, but common sense tells me that he was likely leveraged more than 75% if he lost it all with 400 houses under one bank.I'm quite sure that there are plenty of people who could have owned 400 units at 75% LTV during the downturn and not have lost it all, so either that's not really the case with this guy (he was more than 75% leveraged) and/or he was deficient in other areas relating to his investments or knowledge.

It's known that quality LVP lasts longer than cheap stick & peel, but the question is - does it make sense mathematically to invest more upfront?

The mathematics of real estate remain the same, whichever the country.I get my deals through my personal relationships with local developers and my next step, as I just mentioned, is to create my own developments but with local experienced partners of course.

I think you got a pretty good buyout deal...I can see where the tenant’s lawyer came up with their number...I mean mathematically, if market for your unit is $4800 and the tenant was paying $3700, the annual difference is $13,200...I see good small multi-res in San Fran recently listed at 3%-4% caps with many selling for over list...if one caps the annual difference of $13,200 at 3.5%, then the starting point for the tenant is theoretically $377,000….So if the tenant didn’t really want to move, he could have held out for much more than $61K...Instead, your old tenant seemed happy enough to take his “windfall” and splurge on a $3800 a month (one bdrm?)

Mathematics 101.

Too many people pull marketing budgets out of thin air and pick a number they feel comfortable with... which immediately puts them at a disadvantage vs. using math to find out what budget and max cost per lead will lead to mathematical success.