Answer:
The answer to this problem is 1.2
Step-by-step explanation:
The problem is how in the 2,000s, the milk cost was 2.79, and in 2015 it was 3.98. If you subtract those numbers it equals to 1.19, which the difference in each year is that amount (1.19). And if you round that to the nearest tenth it equals 1.2.
Hope this helps you :)