Ghostbusters, Inc., exorcised (gets rid of) ghosts. During each of the next three months, the company will receive the following number of calls from people who want their ghosts exorcised: Jan 100 calls, Feb 300, Mar 200. Ghostbusters is paid $800 for each ghost exorcised during the month in which the customer calls. Calls need not be responded to during the month they are made, but if a call is responded to one month after it is made, then Ghostbusters looses $100 in future goodwill, and if a call is responded to two months after it is made,Ghostbusters looses $200 in future goodwill. Each employee of Ghostbusters can exorcise 10 ghosts during a month. Each employee is paid a salary of $4000 per month. At the beginning of January, the company has 8 workers. Workers can be hired and trained (in 0 time) at a cost of $5000 per worker. Workers can be fired at a cost of $4000 per worker. Formulate an LP to maximize Ghostbusters profit (revenue less costs) over the next months. Assume that all calls must be handled by the end of March.