Solve.The population of a particular city is increasing at a rate proportional to its size. It follows the function P(t) = 1 + ke0.04t 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. 10 yr
B. 23 yr
C. 128 yr
D. 13 yr


Answer: B

Mathematics

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