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\noindent
\vfil \noindent
\large
\hfil Math 120 A - Spring 2009 \hfil \pp
\hfil Mid-Term Exam Number Two\hfil  \pp
\hfil May 21, 2009 \hfil \pp
\hfil Answers \hfil \pp
\normalsize


There were two versions of the exam.

Version A - In problem 2, J\"{u}rgen runs at 3 meters per second.

\begin{enumerate}
\item (a) \[
L(t) = \frac{100t+500}{t+10}
\]
(b) \[
L^{-1}(t) = \frac{10t-500}{100-t}
\]
\item (a) 186.5428 m (b) 62.5714 sec.
\item 7 hours
\item 3.309 cm
\end{enumerate}

Version B - in problem 2, J\"{u}rgen runs at 4 meters per second.

\begin{enumerate}
\item (a)
\[
L(t) = \frac{100t+750}{t+10}
\]
(b) 
\[
L^{-1}(t) = \frac{750-10t}{t-100}
\]
\item (a) 3.9997 m (b) 40.4444 sec.
\item 8 hours
\item 2.9028 cm
\end{enumerate}




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