The population of locusts in a certain swarm doubles every two hours. If 4 hours ago there were 1,000 locusts in the swarm, in approximately how many hours will the swarm population exceed 512,000 locusts? Choices.
A) 18	B) 15	C) 13	D) 14	E) 12
- 4 hours: 1,000   -2 hours: 2,000   Now: 4,000   + 2 hours: 8,000   + 4 hours: 16,000   + 6 hours: 32,000   + 8 hours: 64,000   + 10 hours: 128,000   + 12 hours: 256,000   + 14 hours: 512,000   Answer : 14
<result>D</result>
The population of locusts in a certain swarm doubles every two hours. If 4 hours ago there were 1,000 locusts in the swarm, in approximately how many hours will the swarm population exceed 512,000 locusts?