Final answer:
To find out the cost of 49 avocados, we can set up a proportion and solve for x.
Step-by-step explanation:
In this problem, we are given that 7 avocados cost 5 dollars. To find out how much 49 avocados will cost, we can set up a proportion:
7 avocados / $5 = 49 avocados / x
To solve for x, we can cross-multiply and then divide:
7x = 245
x = 245 / 7
x ≈ $35
Therefore, 49 avocados will cost approximately $35.