In the year 2009 there were 3500 birds on an island. If the bird population is declining 2.2% per year it means that in the year 2014 we will have 3500*

= 3131.57 birds.
The best prediction is that in the year 2014 the bird population will be 3132.
Check the picture below.
you can pretty much count the units for the base and its height off the grid.
14.4 is going to be your answer