Maths-
SAT
Easy
Question
At the beginning of a study, the number of bacteria in a population is 150,000. The number of bacteria doubles every hour for a limited period of time. For this period of time, which equation models the number of bacteria y in this population after x hours?
- y= 150,0002x
- y=150,000(2)x
- y=x2+150,000
- y=2x2+150,000
The correct answer is: y=150,000(2)x
The statement gives the Geometric progression the first term being 150,000 and common ratio being 2
The general term or the number of bacteria at a particular time is 15,000(2)x
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