Southwest Magazine sells subscriptions for $$120$ for $30$ issues. The company collects cash in advance and then mails out the magazines to subscribers each month.

Apply the revenue recognition principle to determine

a$.$ when Southwest Magazine should record revenue for this situation.

b$.$ the amount of revenue Southwest Magazine should record for ten issues.

a$.$ Southwest Magazine should record revenue when the subscribers.

b$.$ For ten issues, Southwest Magazine should record revenue of