Ruger Manufacturing sells office equipment on September 30, 2013, for $8,250 cash. The office equipment was purchased on January 5, 2009, at a cost of $72,500, and had an estimated useful life of five years and an estimated residual value of $2,500. Adjusting journal entries are made annually at the companys year-end, December 31 and Ruger uses straight-line depreciation. Prepare journal entries to: a) update depreciation to September 30, 2013 b) record the sale of the equipment, and c) record the sale of the equipment if Ruger Manufacturing received $4,500 cash for it.