During a football game, a concussion stand sold a family three hamburgers and two hot dogs for a total of $13. it's sold another family two hamburgers and 5 hot dogs for a total of $16. what are the prices of a hamburger and hotdog?

This law is sometimes called the grouping property. as you can see, regardless of how the numbers are grouped, the answer is still 13. the associative law of multiplication is similar to the same law for addition. it says that no matter how you group numbers you are multiplying together, you will get the same answer.

The correct answer is b