Answer:
3
Explanation:
First, you would need to divide the cost of the cantaloupes by how much money she has.
21 ÷ 7 = 3
Let's check our answer by multiplying the cost by how many cantaloupes she could possibly get for $21.
7 × 3 = 21
Answer: Gabriella can buy 3 cantaloupes with $21.