The rate of change in the number of bacteria in a culture is proportional to the number present. In a certain laboratory experiment, a culture had 10,000 bacteria initially, 20,000 a time t1 minutes and 100,000 bacteria at (t1+10) minutes.
A) In terms of t only, find the number of bacteria in the culture a any time t minutes, t≥0.
B) How many bacteria were there after 20 minutes.
C) How many minutes had elasped when the 20,000 bacteria were observed
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