I am trying to figure out the following: How much was spent on capital projects for 2013, 2014, and 2015? How much should be added to the annual

I am trying to figure out the following:

How much was spent on capital projects for 2013, 2014, and 2015? How much should be added to the annual budget to cover the costs of financing these projects? Provide an explanation of how you made the calculation.

The balance sheet shows the following:

Net investment in capital assets

2015 - $243,499

2014 - $231,850

2013 - $218,268 

I don't know the steps or formula to figure this question out. I am sure it has to do with NPV, IRR, MIRR etc. but I am lost on this.