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A population grows with dP/dt = kP and triples in 2 hours. How long will it take to become 9 times?
A6 hours
B3 hours
C4 hours
D18 hours
Answer & Solution
Correct answer: C. 4 hours
Tripling twice gives 9 times, and each tripling takes 2 hours, so the time is 4 hours.
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