In 2010, population of country Erehwon was 55 million people and increasing by 2.3% every year. Population of country Ecalpon, on other hand, was 46 million people and increasing by 3.4% every year. (a) For every country, write the formula expressing population as the function of time t, where t is number of years since 2010. (Consider W(t) = population of Erehwon at time t, in millions of people, and consider C(t) = population of Ecalpon at time t, in millions of people.) W(t) = C(t) = (b) Determine value(s) of t, if any, when two countries have same population. (c) When is population of Ecalpon double that of Erehwon?