Explanation
The model of the population of the town is given as;
[tex]f(x)=18791\mleft(1.023\mright)^x[/tex]At x=0 we get the initial population of the town
[tex]\begin{gathered} \text{Initial population=18791(1.023)}^0 \\ =18791 \end{gathered}[/tex]Answer: 18791