Answer
$\displaystyle \left[\begin{array}{ll}
4690 & 1690 & 13210\\
\end{array}\right]$
4690 dollars in revenue for Santa Monica
1690 dollars in revenue for Long Beach
9000 dollars in revenue for Anaheim
Work Step by Step
$A=\displaystyle \left[\begin{array}{ll}
4000 & 1000 & 3500\\
400& 300 & 200\\
700 & 500 & 9000
\end{array}\right]$
$B = \displaystyle \left[\begin{array}{ll}
0.90 & 0.80 & 1.10\\
\end{array}\right]$
Find the product matrix BA
$=\displaystyle \left[\begin{array}{ll}
4000 * 0.90 + 400 * 0.80 + 700 * 1.10\\
1000 * 0.90 + 300 * 0.80 + 500 * 1.10\\
3500 * 0.90 + 200 * 0.80 + 9000 * 1.10
\end{array}\right]$
$=\displaystyle \left[\begin{array}{ll}
4690 & 1690 & 13210\\
\end{array}\right]$
4690 dollars in revenue for Santa Monica
1690 dollars in revenue for Long Beach
9000 dollars in revenue for Anaheim
