Answer:
a. Revenue is earned when when service or product are delivered to client. Thus Seacoast Magazine should recognize the revenue when it mails the magazines to its subscribers.
b. Total amount received is $60 for 30 issues.
Amount for 1 issues = Total cost / Number of issues of magazines = $60/30 = $2 per issue
Amount of 5 issues = $2 * 5 = $10
Therefore, Seacoast Magazine should record revenue $10 for 5 issues.