Answer
$\text{The distance from the Nile river origin is approximately } 2,305 \text{ miles}$.
Work Step by Step
$ \begin{array}{l}
\mathrm{In\ this\ case,\ the\ river\ has\ an\ altitude\ of\ 1200} \ \mathrm{ft} .\ \mathrm{In\ other\ words} \ \mathrm{we\ need\ to}\\
\mathrm{apply\ the\ given\ formula\ and\ set} \ x\ =\ 1.2\ \mathrm{to\ find\ the\ distance\ of\ the\ Nile\ from\ }\\
\mathrm{the\ origin\ as\ follows} .\ \\
\begin{array}{ c c }
\dfrac{7-1.2}{0.639( 1.2) +1.75} \approx 2.305 &
\end{array}
\end{array}$
Thus, the distance from the origin is $2.305(1000) = 2,305 \text{ miles}$.
