Me and my father got into a discussion about the enslavement of Jews in Egypt. We did some reading on the topic, and we found that the first Jews in Egypt were a single family, of about 70 people. We also found out that the Jews were in Egypt for 430 years, before the exodus. The source from which we got our information from, said that at the time of the exodus, the Jews population numbered 3 million. My father says this is impossible. My question is: how can i get an exponential formula that would approximate this growth. So starting population: 70, ending population: 3 million, time spent: 430 years. Any help would be appreciated.