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nikdorinn [45]
3 years ago
11

During the exponential phase, E. coli bacteria in a culture increase in number at a rate proportional to the current population.

If the population quadruples in 30.8 minutes, in how many minutes will the population quintuple?
Mathematics
1 answer:
maria [59]3 years ago
8 0
The exponential function is given by P(t) = P0 e^kt; where P(t) is the current population, P0 is the initial population and t is the time.
Thus, P(t) / P0 = e^kt
4 = e^30.8k
ln 4 = 30.8k
k = ln 4 / 30.8 = 0.045

For the population to quituple,
5 = e^0.045t
ln 5 = 0.045t
t = ln 5 / 0.045 = 35.76

Therefore, it will take the population 35.76 minutes to quintuple.
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