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%\markboth{Dr. Matthew M. Conroy - University of Washington}{Dr. Matthew M. Conroy - University of Washington}

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{\LARGE{
\hfil Math 120 A - Autumn 2014 \hfil \pp
\hfil Mid-Term Exam Number Two\hfil  \pp
\hfil November 13, 2014 \hfil \pp
\hfil Answers \hfil \pp
}}

There were two versions of the exam.

Version A: In problem 1, there are $10000$ monkeys on the island in 1930.

\begin{enumerate}
\item $97.5882$ years after $1930$.

\item (a) $150$ meters wide and $450$ meters long (b) $67500$ square meters

\item $30.\bar{6}$ hours

\item (a) $x=0$ and $x=4$ 
(b) $\dsps j^{-1}(x)=2-\sqrt{\frac{5+x}{3}}$
(c) $x=-3$ and $x=-1$

\end{enumerate}

Version B: In problem 1, there are $5000$ monkeys on the island in 1920.

\begin{enumerate}
\item $101.1756$ years after $1920$
\item (a) $105$ meters wide and $420$ meters long
(b) $44100$ square meters
\item $51.\bar{3}$ hours
\item (a) $x=0$ and $x=\frac{25}{4}$ 
(b) $\dsps j^{-1}(x) = -7-\sqrt{\frac{109+x}{2}}$
(c) $x=7/3$ and $x=11/3$
\end{enumerate}

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