Hello in French is BonjourHi in French is SalutHow are you is Ca vaBye in French is Arivoir
"French patois" isn't really à proper language as every regions of France have its own. In my region (near Toulouse) we say "bounsoun", near Perpignan they say "ola" (sounds like "hola" because of...
That would be "ma maman dit bonjour".Ma mère vous donne le bonjour or - Vous avez le bonjour de ma mère would be more usual in French
you say -'Bonjour la classe!'
qu'importe que raconte le monde