Solve.The population of a particular city is increasing at a rate proportional to its size. It follows the function P(t) = 1 + ke0.07t where k is a constant and t is the time in years. If the current population is 16,000, in how many years is the population expected to be 40,000? (Round to the nearest year.)

A. 7 yr
B. 13 yr
C. 6 yr
D. 81 yr


Answer: B

Mathematics

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