Mathematics

Problem

55. Population Growth Using 20th-century U.S. census data, the population of Ohio can be modeled by

P(t)=\frac{12.79}{1+2.402 e^{-0.0309 x}}

where

P

is the population in millions and

t

is the number of years since April 1, 1900. Based on this model, when was the population of Ohio 10 million?