# Matrices

In the Real World Exercises

# In the Real World Exercises

### Example 1

Create a matrix for the following data:

The forecast this week is as follows: Monday, a high of 76 degrees and a low of 40 degrees; Tuesday, a high of 71 degrees and a low of 43 degrees; Wednesday, a high of 69 degrees and a low of 40 degrees; Thursday, a high of 66 degrees and a low of 40 degrees; and Friday, thanks to the incoming meteor, a high of 178 degrees and a low of 165 degrees.

### Example 2

There are three kinds of cookies for sale: lemon, chocolate, and lingonberry. There are 24 lemon cookies, 30 chocolate cookies, and 5 lingonberry cookies, since no one likes them. How do we represent this data in matrix form?

### Example 3

We're looking at rental prices in three areas for apartments with one bedroom, two bedrooms, and three bedrooms. The average prices in Funky Town are as follows: for one bedrooms it's \$500, for two bedrooms it's \$800, and for three bedrooms it's \$1100. The average prices in Squalorville are as follows: for one bedrooms it's \$450, for two bedrooms it's \$900, and for three bedrooms it's \$1300. The average prices in Uptighton are as follows: for one bedrooms it's \$900, for two bedrooms it's \$1200, and for three bedrooms it's \$1600. Matrix that.