Bo might have scored 18, 19, 20, 22, 23, or 25 points.

If your answer **doesn't match ours**,

- reread the information that Bo gives his roommates and be sure that you have the right equations
*and* inequalities. - check to be sure that the graph you chose agrees with the information.
- be sure that the answers you've decided on agree with the information.

If you think you can improve your answer, **revise your solution** and then leave us a comment. If you can't figure out why your answer doesn't match, tell us as much as you can **in your comment** and we'll try to help.

If your answer **does match our answer**,

- have you clearly answered all three questions?
- did you explain how you decided which graph was correct?
- are you confident that you could solve another problem like this?