Final answer:
The difference in miles from the student's school to the grocery store can be found by subtracting the distance from home to school from the distance from grocery store to home.
Step-by-step explanation:
The difference in miles from the student's school to the grocery store can be calculated by subtracting the distance from the school to the home from the distance from the grocery store to the home.
Given that the distance from home to school is 1.3 miles, we can subtract this value from the total distance between the grocery store and the home to find the difference in miles.
Let's say the distance from the grocery store to the home is 2.5 miles. The difference in miles would be: 2.5 miles - 1.3 miles = 1.2 miles.