An influenza epidemic spreads at a rate proportional to the product of the number of people infected and the number not yet infected Assume that initially 140 people are infected in a community of 35 000 people and 700 are infected 10 days later a Write an equation for the number of people infected y after t days b When will half the community be infected a Complete the equation below 35 000 Do not round until the final answer Then round to two decimal places as needed