A population of a region is observed to be changing exponentially. Initially, the population had 28000 people, and after 5 years it had increased by 9%.

Question

A population of a region is observed to be changing exponentially. Initially, the population had 28000 people, and after 5 years it had increased by 9%.

1. If this growth continues, what is the expected population after 15 years? [Round your answer to the nearest whole number of people. Answer _____ people
2. If the growth has been exponential, by what percent did the population grow after 3 years? [Give your answer as a percent, rounded to the nearest tenth. Answer. ______ percent

Answer 1

28000 * 1.09^15/5 = 36261

1.09^(3/5)-1 = 5.3%