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Monthly sales of a particular personal computer are expected to decline at the following rate of S'(t) computers per month, where t is time in months and S(t) is the number 01 computers sold each month. 2 s'u) : - 1513 The company plans to stop manufacturing this computer when monthly sales reach 900 computers. If monthly sales now (t= 0) are 1,620 computers, nd S(t). How long will the company continue to manufacture this computer? 5(1) =