A student sick with a flu virus returns to an isolated college campus of 2000 students: the number of students infected with the fur days after the student's return is predicled by the following function: 2000 P() = 1 + 1999-0.32051 (a) According to the model, how many students will be infected with the flu after 5 days? (b) How long will it take for one-half of the student population to become infected