Final answer:
Quentin will have used a total of 8 feet of lumber for his project when it is completed by adding his current 6 feet of lumber to the 2 additional feet he needs.
Step-by-step explanation:
Quentin currently has 6 feet of lumber and needs an additional 2 feet to complete his project. To find the total amount of lumber used when the project is finished, we simply add the lumber he already has to the lumber he needs:
- Start with Quentin's current lumber: 6 feet.
- Add the additional lumber needed: 2 feet.
- Calculate the total lumber used: 6 feet + 2 feet = 8 feet.
Therefore, the project will have used a total of 8 feet of wood when finished.