Verbal problems

Question

The number of bacteria N, in a culture is given by the model N=100e^kt, where t is the time in hours, with t=0 corresponding to the time when N=100. If N=300 when t=5, estimate the time required for the population to double in size.

Answer 1

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Answer 2

When the opposite of a number is increased by 5, then doubled, and added to twice the number, the result is 4 more than the original number.