Answer: $509
Step-by-step explanation:
Given: The amount earned by Robin in 9 weeks = $4,581
To find the amount he earn per week, we need to divide the amount earned in 9 weeks i.e. $4,581 by 9 , we get
The amount earned by him in each week =

⇒The amount earned by him in each week = $509
Hence, Robin earn $509 per week.