Answer:
decrease
Step-by-step explanation:
The ordering quantity for the current year is 535 units, this means that the company must make 7,500 / 535 = 14.02 orders.
If the ordering quantity increases to 680, the number of orders will be 7,500/ 680 = 11.03.
Regardless of how much it costs to place an order, the number of orders made is 3 less than in the previous year, therefore, the ordering costs must decrease.