Answer:
1 time a week
Explanation:
because its once a week which means 1 time a week.
I’d say why could mean another word for purpose
yes. That is True. A buisness letter is formal, and uses profession writing and formatting. A friendly letter is playful, and does not need to be formal, and respectful. (In writing terms) A buisness letter is professional and serious. It is True.
~Silver
