Answer: 1. no
2. yes
3. no
4. if they are talking about the repeating number in -5/6, then yes the repeating number is 3.
5. no
I'm not 100% sure abt these answers but since nobody is answering so far here's my opinion :D I really don't want you to lose 100 points so pls b careful!!
I hope this helps you! it's relatively straightforward but if you need more explanations, don't hesitate to ask!
B. 9^2
explanation: 3^4 is equivalent to 3*3*3*3, which is 81
9^2 (9*9) also equals 81