.
a culture starts at 1000 bacteria and doubles every 60 minutes
how long it take the number of bacteria to reach 5,000
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60 minutes = 1 hour, so I will find the time in hours.
In hours, the growth exponential formula is
N(t) = .
So we write
5000 = ,
=
5 =
Take logarithm base 2
= t
t = use your calculator = 2.322 hours (rounded).
ANSWER. 2.322 hours, or 2 hours 19 minutes and 19 seconds (approximately).
Solved.
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