Question

Help please like hurry I’ve been out of school for 8 months just dumped us in another school never done Algebra in my life and they said if I don’t finish this packet I will get a 0

Answer 1

1.64
2. 225
3.9x^8
4. 16a^4
5. 1
6. 216
7. 64r^21
8. 256
9. 216
10. 144
11. -8
12.1