Answer:
Okay ordering them from least to greatest would be 7.47, 7.70, 7.706, and then 7.75.
Explanation:
31/4 can also be simplified into 7.75
7.47 stays the same
so does 7.706
and 7 7/10 can be simplified into 7.70
So the order would be 7.47, 7.70, 7.706, and then 7.75.