Exponential growth:
[tex]P(t)=A*(1+r)^t[/tex]A is the initial population
r is the rate of growth in decimal form
t is the time (in years)
For the given situation:
[tex]\begin{gathered} P(t)=600*(1+0.04)^t \\ P(t)=600*1.04^t \end{gathered}[/tex]To find the population in 22 years evaluate the equation above for x=22
[tex]\begin{gathered} P(22)=600*1.04^{22} \\ P(22)\approx1422 \end{gathered}[/tex]Then, the predicted population in 22 years is approximately 1422