3 x 10 to the sixth power
3 x 10 to the fifth power
7 x 10 to the fourth power
6 x 10 to the first power
I might be wrong though. If so, sorry!
It is a divisor
hope this helps
Seems like you could just find the speed of the plane with (720*2)km/10hr.
4(-3)-9 =-21. I hope this helpsss