Damari is selling popcorn for $3 a bag. He already has $40, and his goal is to earn $85 total. Use arithmetic to determine how many bags he needs to sell to make his goa

Let's determine how much more money Damari needs to reach his goal. We subtract the amount of money he already has from his goal: $85 - $40 = $<<85-40=45>>45.

To find out how many bags Damari needs to sell, we divide the amount of money he needs to earn by the price per bag: $45 / $3/bag = <<45/3=15>>15 bags.

So, Damari needs to sell 15 bags of popcorn to reach his goal.