Answer:
D
Step-by-step explanation:
there are 9 digits.
and round it off to the nearest hundred million which is 3.
There are 8 digits before the 3... so 10 gets to the power of 8.___ 10⁸
3,0×10⁸ m.s^-1
I think it would be 25t but correct me if i’m wrong
It is really easy it is 6
I'm not sure sry maybe you should of studied
