The bird population on an island is declining at a rate of 1.7% per year. The population was 4600 in the year 2009. Which answer is the best prediction of the population in the year 2015? 4080 4010 4150 4120

Here is the answer:  A reduction of 1.7% will mean that 98.3% will remain.  so, reduction factor of 0.983/year  => A(t) = A(0) x (0.983)^t  Then, after 6 years we have:  A(6) = 4600 x (0.983)⁶ => 4150  Therefore, the answer for this would be the third option. Hope this helps.