I'm trying to calculate a problem where Quantity demanded=9-P and Quantity Supplied=2 x P.

That's an amusing correlation, Eddie: less sexual frustration = more world harmony....

Investor, its the quality of those assets, not the quantity that wins out in the end :D

I also usually get Benjamin Moore Manchester Tan paint in huge quantities from Sherwin Williams when it goes on sale for $22/gallon.

This last week I seem to have bene receiving a larger quantity of leads. 

Selection of properties is an investment decision that will effect the quality and quantity of cash flows you receive ... that part is correct ... quality properties in quality neighborhoods are what attract quality tenants that produce steady cash flow that increases over time ... properties in ghetto war zones, the type where the rent to price ratios are super high, which is what you apparently screen for, do not do that.

Find a dealer and buy Wolf brand cabinets, but you may not qualify for a quantity discount like a contractor would.

[Similarly, I don't gamble by putting all my hard earned into Futures, where you control 100% of a quantity of stock, by only paying (the top) 10%, so when the stock goes up 10% you've doubled your money, but if it goes down 10% - you're wiped out!]

“Inflation is always and everywhere a monetary phenomenon, in the sense that it is and can be produced only by a more rapid increase in the quantity of money than in output.” - Milton FriedmanInflation isn't going to reverse itself.

Insulation companies actually buy in such quantities that their price for material and installation is less than what you would pay to do it yourself from a big box store.