Unit 5, Lesson 3
Comparing Proportional Relationships
Accelerated 7
Practice
Problem 1
A contractor must haul a large amount of dirt to a worksite. She collected information from two hauling companies.
EZ Excavation gives its prices in a table.
| dirt (cubic yards) |
cost (dollars) |
|---|---|
| 8 | 196 |
| 20 | 490 |
| 26 | 637 |
Happy Hauling Service gives its prices in a graph.
- How much would each hauling company charge to haul 40 cubic yards of dirt? Explain or show your reasoning.
- Calculate the rate of change for each relationship. What do they mean for each company?
- If the contractor has 40 cubic yards of dirt to haul and a budget of $1,000, which hauling company should she hire? Explain or show your reasoning.