Say you own a? 500-unit apartment complex. When the apartments are? 90% occupied, monthly operating costs total? $200,000. When occupancy dips to? 80%, monthly operating costs fall to? $197,000. A nearby manufacturing plant has just announced that it will close in three months. Since many residents will lose their jobs and move? away, you fear occupancy may drop to 40?%. If this? happens, what do you expect your monthly operating costs to? be???