Solve the problem.The population of a particular city is increasing at a rate proportional to its size. It follows the function P(t) = 1 + ke0.05t where k is a constant and t is the time in years. If the current population is 32,000, in how many years is the population expected to be 80,000? Round to the nearest year.
A. 10 yr
B. 119 yr
C. 8 yr
D. 18 yr
Answer: D
Mathematics
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+ 
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+ 
A. 
B. 
C. 
D. 
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