Answer: 276 food items
Explanation:
Delsie's class collected 213 food items.
Usman's class collected 9 bags of donations, and each bag has 7 food items.
To find out how many food items Usman's class collected, you can multiply the number of bags by the number of items in each bag:
9 bags * 7 food items/bag = 63 food items
Now, you can add the number of food items collected by each class to find the total:
213 (Delsie's class) + 63 (Usman's class) = 276 food items
So, the two classes collected a total of 276 food items to donate.