# Population in 1990 was 643 million. By 2000, it had grown to 813 million. HOw do you find the exponential growth model?

$y \left(t\right) = 643 , 000 , 000 {e}^{0.02346 t}$
Considering the population modelled using an exponential function of time called $y \left(t\right)$ we get: