A Factory Records Its Inventory in Matrix X

Essay

A factory records its inventory in matrix X , where column 1 represents Model A of a product, column 2 represents Model B of the same product, and each row represents a color of the product. Matrix M is the price of Model A (row 1) and Model B (row 2). Compute matrix XM and give its physical interpretation.
$X=\left[\begin{array}{rr}25 & 10 \\30 & 50 \\15 & 40 \\10 & 5\end{array}\right] \text { and } M=\left[\begin{array}{c}220 \\250\end{array}\right]$