Answer:
OR 
Step-by-step explanation:
<u>First week cost of Isabelle:</u>
2 bags of apples at a price of
each, so total cost is 
3 bags of oranges at a price of
each, so total cost is 
Sum of these two: 
<u>Second week cost of Isabelle:</u>
1 bag of apple at a price of
each, so total cost is 
2 bags of oranges at a price of
each, so total cost is 
Sum of these two: 
<u>Depending on the price of bags of apples and oranges, the second week can cost more, or the first week's total could be more.</u>
- <em>If 2nd weeks total is more than 1st week's total:</em>
The difference is 2nd week's total minus first week's total:

- <em>If 1st weeks total is more than 2nd week's total:</em>
The difference is 1st week's total minus second week's total:
