What should I do if I see a homework-like question with no homework tag?

Ideally the posters should be applying the homework tag themselves, but if I see a question that looks like a homework question what should I do?

Please see our homework policy. We expect homework problems to have some effort put into them, and deal with conceptual issues. If you edit your question to explain (1) What you have tried, (2) the concept you have trouble with, and (3) your level of understanding, I'll be happy to reopen this. (Flag this message for ♦ attention with a custom message, or reply to me in the comments with @Manishearth to notify me)