Question 1 Consider a city where all housing is owned by absentee landlords, and the only people who live in the city are retirees who rent these homes of the same size , regardless of location x. So, instead of a combination of housing size and housing price, we can have a simple measure housing rent which is constant through the city at $200. The city's boundary is dened by a owing river and a conserved forest (a beautiful place to retire in!), such that the city exists only between x = 0 and x = 15, no one lives beyond those edges. Now, Factory A and Factory B want to locate in this city. The factories are operated by robots and none of the residents of the city (all retirees) work there. But the factories will emit an unhealthy amount of carbon monoxide, thus causing air pollution the areas around it. The two