Using Matrices with Real-World Data

The data given in the activity Ye Olde-Fashioned Ice Cream Shoppe can be organized into a matrix. We can label the rows and columns of the matrix to remind us of what each entry in the matrix represents. One set of data could be organized into an “ingredient by recipe” matrix, in which each row represents an ingredient and each column represents the amount of each ingredient used in each recipe.

light extra rich eggs cream milk

We can use another set of data to create a “recipe by day” matrix:

weekdays weekend days holidays light extra rich

How could you use the entries in these two matrices to create an “ingredient by day” matrix? Show the computations you would use to complete each entry in the matrix.

weekdays weekend days holidays eggs cream milk