Question

The population of the world in 1987 was 5 billion and the relative growth rate was estimated at 2 percent per year. Assuming that the world population follows an exponential growth model, find the projected world population in 1995?

Answer 1

Population (1995): `5.9` billion

Explanation:

`"Population"_(1995)`

`color(white)("XXX") = "Population"_(1987) * (1 + 2%)^(1995-1987)`

`color(white)("XXX") = 5 " billion" xx (1.02)^8`

`color(white)("XXX")~~ 5.8582969...` billion