In 2010, the population of the country Erehwon was 50 million people and increasing by 2.9% every year. The population of the country Ecalpon, on other hand, was 45 million people and increasing by 3.2% every year. (a) For each country, write a formula expressing the population as a function of time t, where t is the number of years since 2010. (b) Find the value(s) of t, if any, when the two countries have the same population. (c) When is the population of Ecalpon double that of Erehwon?
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