The populations of Towns A, B, and C vary exponentially with respect to time. The population of Town A increases by 20% every 4 years. What is the annual percent change in the population of Town A?  %    The population of Town B decreases by 35% every 15 years. What is the annual percent change in the population of Town B?  %    The population of Town C triples every 7 years. What is the annual percent change in the population of Town C?

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