I believe its both but if I had to choose one I'd say
you should not chew gum in class because it's rude
Why:
It makes it look like your uninterested and not listening
If you have a cell phone yes, most students would use it for social media but it may also be used for school related topics.
Okay and? What do u need help with
Exclamation point because it's not formal or professional
Answer:
He has been Invited to their party
Explanation:
Please Mark Brainlist
