this is my question,. i jist need answer do not have to show work

If t is in years since 1990, one model for the population of the world, P, in billions, is 40 P = . 1 + 116-008? (a) What does this model predict for the maximum sustainable population of the world? Enter an exact answer. This model predicts that when t is very large, the population is I billion. lb) According to this model, when will the earth's population reach 8 billion? 39.9 billion? Round your answers to the nearest year. The population of the world should be 8 billion in I The population of the world should be 39.9 billion in