Answer
$CB=\left[\begin{array}{c c} -0.19 & -0.29\\ 0.27 & 3.25\end{array} \right]$
Work Step by Step
Using a graphing calculator (see attached picture), we get:
$CB=\left[\begin{array}{c c} -0.19 & -0.29\\ 0.27 & 3.25\end{array} \right]$
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