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When an antibiotic is introduced into a culture of80,000bacteria, the number of bacteria decreases exponentially. After 6hours, there are only 50,000bacteria. a. Write an exponential

When an antibiotic is introduced into a culture of80,000bacteria, the number of bacteria decreases exponentially. After 6hours, there are only 50,000bacteria.

a. Write an exponential equation to express the growth function y in terms of time t in hours.

b. In how many hours will half the number of bacteriaremain?

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