20 Minutes

10 Minutes

Never, the slope of the graphs of their rates is the same. Parallel lines never intersect.

Real World Systems and Solutions

20 Minutes

10 Minutes

Never, the slope of the graphs of their rates is the same. Parallel lines never intersect.

Step 1

At how many minutes do both companies charge the same amount?

20 minutes

Step 2

When is Company T a better Value?

T is a better value from 0 to 20 minutes.

Step 3

When is Company S a better Value?

S is a better value if you talk more than 20 minutes

Step 4

The pink region represents the cheaper segment of the chart.

A well known real world math incident that almost cost a Verizon customer a large amount of money (Hint: there's a difference between .02 cents and .02 dollars!)