Answer:
Keisha should buy 2268 grams of cheese.
Step-by-step explanation:
16 ounces is equal to roughly 453.6 grams. However, she can only buy full grams. Therefore you must round up. So, she must buy 454 grams per batch so she will have enough cheese to make the enchiladas. (If you rounded down she wouldn't have enough.)
Since she is making 5 batches, multiply 453.6 by 5. You will get 2268 grams of cheese.
Hope this helps :)