Because of an insufficient oxygen supply, the trout population P in a lake is dying. dP _i The population's rate of change can be modeled lax/E = 1258 20 where g is the time (in days). When t = O, the population is 2500. (a). Find a model for the population. (b). What is the population after 15 days? (c). How long will it take for the entire trout population to die