Question

All the answers I want to know please this is important for me

Answer 1

1)6.3 times 10 to the 5th power
2)4.08 times 10 to the 8th power
3)8 times 10 to the 7th power
4)1.502 times 10 to the 13th power
5)3.5 times 10 to the 2nd power
6)7.06 times 10 to the 3rd power
7)1.0504 times 10 to the 7th power

8) 42000000
9) 5.7100
10) 80030000000
11) 500000000
12) 7050
13) 1405000000
14) 5020300000

15) B
16) B
17) D
18) C