The way you calculate your weighted average interested rate is by multiplying the rate of on each debt by the proportion of that debt to your total debt, and then adding up that sum.For example, say your 15k debt is spread at 4k Car, 5k CC, 6k Student loan.The car is 4/15, the CC is 5/15 and the SL is 6/15.  

Now, while Gross Rent Multiplier (GRM) is taken into account for rental properties.

im both a real estate agent and investor, but wholesaling was quite hard and didnt work out for me last time i tried (before i became an agent).On a small budget like this do you think i should spend this $3000 in stock options to multiply my money?  

Why do you divide by 1000 and multiply by 3.5?

., when i multiply the monthly gross x 12, in both cases its less then your stated annual gross.

Which one of these numbers am I multiplying the 70%- repairs- my fee?....

You can then use a Gross Rent Multiplier (GRM) to determine the ARV or back into a number using a CAP Rate.  

Why not multiply your investing options exponentially, by hooking up with other licensees as well as other seasoned investors?

Multiply the appraised value by 4% to determine the assessment.

I do understand it's a small amount but multiply it by 10 properties a year and it quickly adds up.