b) On January 1, 2016, WAX-D purchased equipment for $60,000 cash, expecting it to remain in service for six years. The equipment is depreciated using the straight-line method with $2,000 estimated residual value. On April 30, 2018, the equipment was sold for $48,000 cash. Record depreciation expense for 2018 and the sale of the equipment on April 30, 2018. (Do not round your intermediate calculations.) c) On October 1, 2017, Zircon Jewelry Company accepted a 4-month, 10 % note for $2,400 in settlement of an overdue account receivable. Interest revenue was accrued through December 31, 2017. Zircon receives the maturity value of the note at maturity. Prepare the journal entry to record the collection