Question

Kiersten runs a website that helps people learn programming. Every month, Kiersten receives a subscription fee of $10 from each of the subscribers to her website. Last month, the website had 100 subscribers. This month, 30 new members joined the website, and 10 members cancelled their subscription.

How much money will Kiersten’s online business earn this month?

Answer 1

So what you do is add 30 to 100 and then take away 10 leaving you with 120. You then multiply by 10 giving you 1,200 dollars a month. Wish I was making that much money a month :)