Suppose that poaching reduces the population of an endangered animal by 1% per year. Further suppose that when the population of this animal falls below 40 ​, its extinction is inevitable​ (owing to the lack of reproductive options without severe​ in-breeding). If the current population of the animal is ​1600, when will it face​ extinction? Comment on the validity of this exponential model.

It will take about (how many) years for the animal to face extinction?