Prepare entries for disposal by sale. (LO 3) BE9-10 Gunkelson Company sells equipment on September 30, 2017, for $18,000 cash. The equipment originally cost $72,000 and as of January 1, 2017, had accumulated depreciation of $42,000. Depreciation for the first 9 months of 2017 is $5,250. Prepare the journal entries to (a) update depreciation to September 30, 2017, and (b) record the sale of the equipment