Answer
$ \displaystyle \left[\begin{array}{ll}
-7 & -3 & -4\\
22/7 & -2/7 & 16/7\\
50/7 & 26/7 & 37/7
\end{array}\right]$
Work Step by Step
The question asks to use a graphing calculator to find $BAB^{-1}$
Work is done with the online matrix calculator
desmos.com/matrix
See image below.
A and B are given in the image.