For an approximation that is simulated by software, there are several websites that can provide you with "comps" - however, I would not bank on their accuracy.Here's a list:http://www.biggerpockets.com/house-value-comps.htmlFor more resources like this, check the links on the left of the forum.

I've got an appointment with my tax advisor to pay last years taxes and run some simulated numbers for 2017 in terms of rental property income.

@Long Dinh   A lender should be able to do a "what-if" simulator on your credit report. 

But just like people simulation stock trade, would be cool to hear what people think! 

Here are the links to the calculators I utilized to simulate these hypothetical scenarios.

The greatest help to me was using the resources available from you school, that simulate test questions. 

I simulate the situation by pushing the tank back with my hand and flush it.

Simulate paying the same amount (let's say $3,000) each month toward just your mortgage vs. funneling it through a HELOC.

I have been trying to simulate different scenarios by buying property with 20% down and none of them show a positive or not even close to be breakeven.I'm willing to invest in different states but all this is new to me and it's complicated.Thank you.

Those assignments are designed to simulate real-world scenarios and challenges you might face in your own real estate investing journey.