I think it's A! definitely not C or D
Answer:
9
√
2
Step-by-step explanation:
1. Rewrite 162 as
⋅2
2. factor 81 out of 162

3. Rewrite 81 as 

4. Pull the terms from under the radical
![\sqrt[9]{2}](https://tex.z-dn.net/?f=%5Csqrt%5B9%5D%7B2%7D)
I hope this helps :)
Answer:
A and C
Step-by-step explanation:
6.8 - 2.17 = 4.63
7.23 - 2.17 = 5.06