Suppose the spread of a direct contact disease in a school is modeled by the exponential function p(t) = 2,000 1 + e3 − t where p(t) is the total number of people infected after t hours. what does 2,000 represent in equation? a) the rate at which the disease spreads b) the number of the people in the school c) the expected change in number of people infected eliminate d) the total number of people infected after t hours