Is a backpack a carry on?

Related questions

1. What is the fee to choose a seat on American Airlines basic economy?
2. Do I have to pay for my seat on American Airlines?
3. What is basic economy flight?
4. Can you check a bag with basic economy American?
5. Is there a difference between basic economy and economy on American Airlines?
6. How big can my personal item be on American Airlines?
7. Is backpack considered personal item?
8. Can I bring two quart size bag on a plane?
9. What is allowed in a carry on bag?
10. How big of a purse can I take on a plane?

Tags

1. #personal
2. #larger
3. #allow
4. #bring
5. #backpack
6. #airlines
7. #carry
8. #filled
9. #inches
10. #purse
11. #check
12. #maximum
13. #briefcase