Encode the following message:
We will return Break the message into groups of two letters and use the matrix

M=\left[\begin{array}{ll}4 & 5 \\2 & 4\end{array}\right]

\left[\begin{array}{r}117 \\ 56\end{array}\right],\left[\begin{array}{r}137 \\ 64\end{array}\right],\left[\begin{array}{r}108 \\ 48\end{array}\right],\left[\begin{array}{r}97 \\ 46\end{array}\right],\left[\begin{array}{r}185 \\ 82\end{array}\right],\left[\begin{array}{r}142 \\ 64\end{array}\right]

\left[\begin{array}{r}117 \\ 56\end{array}\right],\left[\begin{array}{l}223 \\ 100\end{array}\right],\left[\begin{array}{l}96 \\ 42\end{array}\right],\left[\begin{array}{r}183 \\ 78\end{array}\right],\left[\begin{array}{l}97 \\ 46\end{array}\right],\left[\begin{array}{r}185 \\ 82\end{array}\right],\left[\begin{array}{r}142 \\ 64\end{array}\right.

\left[\begin{array}{r}121 \\ 58\end{array}\right],\left[\begin{array}{r}213 \\ 96\end{array}\right],\left[\begin{array}{l}96 \\ 42\end{array}\right],\left[\begin{array}{r}187 \\ 80\end{array}\right],\left[\begin{array}{l}89 \\ 42\end{array}\right],\left[\begin{array}{r}185 \\ 82\end{array}\right],\left[\begin{array}{r}142 \\ 64\end{array}\right]

\left[\begin{array}{r}109 \\ 52\end{array}\right],\left[\begin{array}{l}223 \\ 100\end{array}\right],\left[\begin{array}{r}101 \\ 44\end{array}\right],\left[\begin{array}{r}183 \\ 78\end{array}\right],\left[\begin{array}{l}97 \\ 46\end{array}\right],\left[\begin{array}{r}181 \\ 80\end{array}\right],\left[\begin{array}{r}138 \\ 62\end{array}\right]

The Reduced Row Echelon Form of the Augmented Matrix of a System

Multiple Choice