1. The biologist is studying the increase in population of a particular bacteria. The number of bacteria in a petr dish is doubling every 15 minutes. The initial population is 20 bacteria. a) Determine the number of bacteria after 2 hours. b) How fast is the number of bacteria is increasing when they were initially counted? c) At what time, to the nearest tenth of a minute, is the bacteria population increasing at a rate of 48 000/min?

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