Answer
Calculator used: desmos.com/matrix
$=\left[\begin{array}{ccc}
{86.9}&{33.9}&{-37.29}\\
{156.97}&{55}&{-60.5}\\
{-24.98}&{-8.5}&{9.35}\\
{10.56}&{1.2}&{-1.32}\end{array}\right]$
Work Step by Step
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Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 4 - Section 4.2 - Matrix Multiplication - Exercises - Page 252: 28
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