The apocalypse started in NY where 100 people were infected. From there the zombie apocalypse continued to spread. After 17 minutes the number of people infected 200 people.assume that no human have figured out how to kill the zombie or stop it from spreading for the first 24 hours

If the number doubles every 17 minutes, then that means it doubles 1440/17 times in 24 hours. That means there will be

100*2^(1440/17) = 3.15x10^27 zombies

I guess that's not reasonable.

So, assume that the number grows by 100 every 17 minutes. That means there will be

100 + 100*1440/17 = 8571