Vous rentrez en suisee in English would be ''You are returning to Switzerland.''
1) IF YOU WANT TO ANSWER AFFIRMATIVELY:
Oui, nous sommes intelligents.
IF YOU WANT TO ANSWER NEGATIVELY:
Non, nous ne sommes pas intelligents.
2) Je suis au restaurant. (Basically: Je suis (location).)
3) Ce sont des feuilles de papier.
80+350=430 all you have to do is add the two numbers and that is the sum of tips and money