### Home > CC3 > Chapter 3 > Lesson 3.1.7 > Problem 3-67

** **

The amount of money Theresa earns at her job varies directly with the number of hours she works. This means that her earnings are proportional with the time she works. She knows that when she works

How much do you predict Theresa would earn after working

hours?

How much does she make in

hour? Multiply this value by to find how much she makes in hours.

You could also use a proportion to solve this problem.

Use the unit rate to explain how can you find Theresa’s earnings (

) if she works forhours.The unit rate is

. After

hours, she earnsdollars.

Create a complete graph of Theresa’s earnings over time. Should the graph be continuous or discrete? Explain your decision.

Substitute numbers for

and solve for. Plot these points on a graph.