The population of the world in the year 1600 was about 500 million, and in the year 2020 was about 7795 million.
(a) Assuming that the population of the world grows exponentially, find the equation in the form P0ekt for the population P(t) in millions in the year t.
(b) Use your answer from part (a) to find the population of the world in the year 1.
(c) Is your answer to part (b) reasonable? What does this tell you about how the population of the world grows?