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Mathematics, 13.01.2021 22:20 kadenreynolds5

In a lab, 670 cells are present at the beginning of an experiment. During the first 6 hours, the number of cells decreased by 15%
each hour.
(a) Write an exponential model giving the number of cells y present
t hours after starting the experiment.
(b) Estimate the time when the number of cells is 210.

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