Since we don't know the number of bags that will be used, we will assign a variable called "x" that will represent it. We know that each bag will contain 6 items, we also know that the customer will buy at most 72 items, therefore if we multiply the number of bags by 6, the result needs to be equal or less than 72. This is done below:
In order to solve it, we need to divide both sides by 6.
Corey will need at most 12 bags to pack the customer's items.