Evaluate the formula for $\displaystyle{t}={5}\usepackage{cmbright}\Huge\$ to find the value of d: $\displaystyle{d}={150}{{\left({0.99}\right)}}^{{5}}\usepackage{cmbright}\Huge\$

$\displaystyle{d}={150}{\left({0.95099}\ldots\right)}={142.64850}\ldots\usepackage{cmbright}\Huge\$

There will be about 142 African wild dogs left on the reserve after 5 years.