According to the given value of b, we can determine the growth rate by substracting 1 from the value of b, that is 2, and converting the result to a percent:
[tex]\begin{gathered} 2-1=1 \\ 1\cdot100=100\% \end{gathered}[/tex]
It means that the weekly growth rate is 100%.
In every day language, it means that every week, the number of fish in the lake doubles the number of the last week.
