QuestionA logistic growth model for world population, $\mathrm{f}(\mathrm{x})$, in billions, x years after 1976 is $\mathrm{f}(\mathrm{x})=\frac{12.57}{1+4.11 e^{-0.026 x}}$. According to this model, when will the world population be 12 billion?
According to this model, the world population will be 12 billion in $\square$ (Round to the nearest whole number as needed.)