Answer :
Answer:
The answer is $1200.
Step-by-step explanation:
Every month, Kiersten receives a subscription fee of $10.
Last month, the website had 100 subscribers.
This month, 30 new members joined the website, and 10 members cancelled their subscription.
So, total subscription this month = [tex]100+30-10=120[/tex]
Hence, her earnings this month will be = [tex]10\times120=1200[/tex] dollars