The Petflix company runs a subscription
business - to use their services, users pay
a monthly, fixed fee of PLN 150.
This month, the total number of paying
users is 2150.
Let's assume that:
over the next months, the marketing
team will attract 300 new paying users
every month.
- monthly "churn" (% of paying users who
cancel their subscription) will remain
constant at 11%.
In how many months will the Petflix user
base stop growing?