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8. Two types of bacteria are bred in an experiment. The population of bacteria A (N1) t hours after the beginning of the experiment is
8. Two types of bacteria are bred in an experiment. The population of bacteria A (N1) t hours after the beginning of the experiment is given by N, = 20 000 + 5000log(2t). The population of bacteria B (N2) t hours after the beginning of the experiment is given by N2 =15 000+8000log(3t) . (a) Which bacteria have a larger population 4 hours after the beginning of the experiment? (2 marks) (b) When will the populations of bacteria A and bacteria B be equal? (Give your answer (4 marks) correct to the nearest hour.)
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