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## anonymous 5 years ago The number of bacteria in a certain population increases according to an exponential growth model, with a growth rate of 3.5% per hour. How many hours does it take for the size of the sample to double? Do not round any intermediate computations, and round your answer to the nearest hundredth.

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1. amistre64

2P = P e^(.035t)

2. anonymous

$2=e^{.035t}$ $ln(2)=.035t$ $t=\frac{ln(2)}{.035}$ $t=19.804$

3. anonymous

type looks weird. is it my browser?

4. amistre64

openstudy seems to have a bit of a drag in it today....

5. anonymous

i'll say! i thought it was my connection, but i guess you are having problems as well.

6. amistre64

i go to post and its almost as if the comp freezes....

7. anonymous

so it would be 20hrs

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