A species of fish was added to a lake. The population size P (t) of this species can be modeled by the following function, where t is the number of years from the time the species was added to the lake. 1500 P(t) = 1 + 2e -0.1t Find the initial population size of the species and the population size after 7 years. Round your answers to the nearest whole number as necessary. Initial population size: fish Population size after 7 years: fish X 5