Let n be the number of years since the population started increasing, and let p(n) the the population after n years. We'll have that:
[tex]p(n)=40560(1.15)^n[/tex]For n = 16, we'll have that:
[tex]\begin{gathered} p(16)=40560(1.15)^{16} \\ \Rightarrow p(16)=379545 \end{gathered}[/tex]This way, we can conclude that: