Use a calculator to evaluate the present value of an annuity formula

\[P=m\left[\frac{1-\left(1+\frac{r}{n}ight)^{-n t}}{\frac{r}{n}}ight]\]

for the values of the variables \(m, r\), and \(t\) (respectively) given in Problems 5-12. Assume \(n=12\).

\(\$ 50 ; 5 \% ; 5\) yr