Thank you for the opportunity to help you with your question!

Hey! You can use two different methods to solve this problem:

1. Write out the possible combinations:

Tate, Haley, Sam

Tate, Sam, Haley

Haley, Tate, Sam

Haley, Sam, Tate

Sam, Tate, Haley

Same, Haley, Tate

There's 6 possible ways they can line up.

2. Another way to solve this is to use a factorial expression, which will be more necessary once you deal with more complicated problems:

3! = 3*2*1 = 6 combinations

The way this works is '3', because that's the number of people. For example, the factorial expression for a combination of 5 people ordered would be 5!. Let me know if you need any more help :)

Please let me know if you need any clarification. I'm always happy to answer your questions.