11. Investment Income Problem: A brokerage company has investments in four states: California, Arkansas, Texas, and South Dakota. The investments are bonds, mortgages, and loans. Matrix \( [M] \) shows the number of millions of dollars in each investment in each state.
\[
[M]=\left[\begin{array}{rrrr}
\text { CA } & \text { AR } & \text { TX } & \text { SD } \\
{\left[\begin{array}{rrrr}
32 & 8 & 15 & 2 \\
15 & 20 & 17 & 9 \\
14 & 22 & 23 & 7
\end{array}\right]} & \begin{array}{l}
\text { Bonds } \\
\text { Mortgages } \\
\text { Loans }
\end{array}
\end{array}\right.
\]
The percentages of annual income that the investments yield are bonds, \( 6 \% \); mortgages,
