Answer:
1.35 x [tex]10^1^2[/tex] metres
Step-by-step explanation:
Speed = distance / time.
We're finding distance - distance = speed x time.
(3.0 x [tex]10^{8}[/tex]) x 4500 = 1.35 x [tex]10^1^2[/tex]
so they travel 1.35 x [tex]10^1^2[/tex] metres in 4500 seconds.
Hope this helps! Let me know if you have any questions :)