Question: There are initially 4000 bacteria per milliliter in a sample, and after 1 hour their concentration increases to 6000 bacteria per milliliter. Assume exponential growth.

There are initially 4000 bacteria per milliliter in a sample, and after 1 hour their concentration increases to 6000 bacteria per milliliter. Assume exponential growth.

(a) How many bacteria are there after 2.5 hours?

(b) After how long are there 8500 bacteria per milliliter?

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