Answer:
Approximately $18 each month.
Explanation:
This is quite simple. So, we know that there are 12 months in a year. And we know that in a year, the store has given out discounts totaling up to $216. All we have to do is divide the total number by how many months there are in a year.
This means that the store gives out $18 of discounts per month.
(Also, you don't seem college level)