Answer
Revenue$=\left[\begin{array}{ccc}{10}&{5}&{8}\end{array}\right]\left[\begin{array}{c}{100}\\{50}\\{70}\end{array}\right]=[1,810]$
(Total revenue = ${{\$}} 1810$ )
Work Step by Step
Revenue= Price $\times$ Quantity
Arrange the three prices as a 1$\times$3 row matrix and
the three quantities as a 3$\times$1 column matrix.
These matrices can be multiplied (the resulting matrix is a 1$\times$1 matrix).
Revenue$=\left[\begin{array}{ccc}{10}&{5}&{8}\end{array}\right]\left[\begin{array}{c}{100}\\{50}\\{70}\end{array}\right]$
$=[1000+250+560]=[1,810]$
(Total revenue = ${{\$}} 1810$ )
