Mike and Sarah are the only two residents of a neighborhood. They both get utility from private consumption good, 0, and from the total number of workers hired for waste management in their neighborhood, F : fM + f3. Specifically, Mike's utility is m; : 4n(cM) + EMF) and Sarah's utility is as : 4n(cs) + IMF). Each of them has an income of $90. The price of the consumption good and price / wage of each worker are both equal to 1