Final answer:
Vivian used a total of 4.25 pounds of meat for hamburgers and vegetable soup from a 5-pound package, leaving her with 0.75 pounds of meat to freeze for later use.
Step-by-step explanation:
To find out how much hamburger meat Vivian can freeze for later, we need to subtract the amount of meat she has already used from the original 5-pound package. Vivian used 2.75 pounds for hamburgers and 1.5 pounds for vegetable soup.
First, we add the amounts of meat used:
- 2.75 pounds (hamburgers)
- 1.5 pounds (vegetable soup)
2.75 pounds + 1.5 pounds = 4.25 pounds used in total.
Now, we subtract the total used from the original package:
5 pounds (original amount) - 4.25 pounds (used amount) = 0.75 pounds of meat left to freeze.