Question

A population of 100 frogs increases at an annual rate of 22%. How many frogs will there be in 8 years?

Answer 1

$\begin{gathered} \text{Initial population of frog}\Rightarrow100 \\ Increase\text{ rate}\Rightarrow22\text{ \%} \\ \text{Number of frog}\Rightarrow100\times(1+\frac{22}{100})^8 \\ \Rightarrow100\times1.22^8 \\ \Rightarrow490\text{ frog} \end{gathered}$