The Customer Support Department at Wadsworth Supply is analyzing the costs of its services. A cost analyst has collected monthly data on the three main functions of the department and the total costs for the last year, which follow.

$\backslash$table$[[$Month$,\backslash$table$[[$Special$],[$Reports$],[$Completed$]],\backslash$table$[[$Customer$],[$Accounts$],[$Maintained$]],\backslash$table$[[$Transactions$],[$Processed$]],\backslash$table$[[$Customer Support$],[$Costs $($ $$000)]]],[1,21,2,845,90,140,$$ $1,666],[2,27,2,686,70,240,1,768],[3,43,2,647,76,540,1,670],[4,27,1,881,54,580,1,616],[5,39,2,048,55,230,1,982],[6,31,1,940,49,710,1,406],[7,45,1,226,33,770,1,410],[8,46,1,157,30,640,1,476],[9,30,1,389,32,740,1,208],[10,36,2,645,70,370,1,516],[11,22,1,931,53,610,1,317],[12,33,2,005,52,430,1,132],[$Totals$,400,24,400,670,000,$$$18,167$