We have discussed in class aggregate planning using the following data: c_(H)=$500, cost of hiring one worker c_(F)=$1000, cost of firing one worker c_(I)=$80, cost of holding one unit of inventory for one month k=0.14653 units, aggregate units produced by one worker in one day Suppose the demand forecast and workdays for the next 12 months are shown in the table below. At the beginning of January, there are 500 units in inventory and 300 workers. Month {:[" Forecast Demand "],[" (units) "]:} Workdays Jan 1600 20 Feb 3200 24 Mar 700 14 Apr 2300 23 May 1400 18 June 460 10 July 840 20 Aug 580 14 Sept 2000 20 Oct 1400 20 Nov 4600 14 Dec 840 14