Recording Plant Asset Disposals Spock Company had purchased a truck costing $52,000. The truck had an estimated salvage value of zero and an estimated useful life of 8 years. The straight-line depreciation method is used. Required: In the attached Workpaper #3, give the general journal entry required to record the disposal of the truck in each of the following independent cases (note, enter the case number in the Date column of the journal): 1. The truck is discarded at the end of year 8. 2. The truck is discarded at the end of year 6. 3. The truck is sold for $8,000 cash at the end of year 7. 4. The truck is sold for $26,000 cash on July 1 of year 4. 5. The truck is exchanged for a new truck at the end of year 5. The old truck has a fair market value of $16,000 and Spock Company pays $45,000 cash in the exchange, which is presumed to have commercial substance. 6. The truck is exchanged for a new truck at the end of year 5. The old truck has a fair market value of $23,500 and Spock Company pays $37,500 cash in exchange, which is presumed to have commercial substance