Answer:
Radical 7 is between 2 and 3, so radical 7 is about 2.65.
Explanation:
Since 2 squared = 4 is too low and 3 squared = 9 is too high, we know it is somewhere between 2 and 3.
Since 7 is closer to 9 than it is to 4, we also know that the estimate will be closer to 3 than it is to 4.
Since 7 is only 2 units away from 9 and 3 units away from 4, we can estimate that it isn't too much closer to 3 and would be more towards to middle.