Chapter 11.4, Problem 87AYU

College Tuition Nikki and Joe take classes at a community college, LCCC, and a local university, SIUE. The number of credit hours taken and the cost per credit hour ( $2018-2019$ academic year, tuition and approximate fees) are as follws:

$\begin{array}{ccc}& & \\ & & \\ & & \end{array}$ $\begin{array}{ccc}& \text{LCCC}& \text{SIUE}\\ \text{Nikki}& 6& 9\\ \text{Joe}& 3& 12\end{array}\begin{array}{cc}& \text{Cost}\text{per}\text{Credit}\text{Hour}\\ \text{LCCC}& \$148.00\\ \text{SIUE}& \$404.40\end{array}$

Write a matrix $A$ for the credit hours taken by each student and a matrix $B$ for the cost per credit hour.

Compute $AB$ and interpret the results.