Question

please help me!!!!!!!!!!!

Answer 1

3. Yes
4. No, not to a power of ten
5. BDAC
6. BACD
7. Top answer
8. 25
9. 15 x10^11
10. 24 x10^2
11. 7.23 x10^14
12. 9.191 x10^7
13. t^38

Does that help?