PRUBLEM 3 (8 points Dietz owned a machine costing $25,000, had accumulated depreciation of $20,000. It was sold for $8,000 cash. Prepare the journal entry to record the sale. PROBLEM 4(8 points) Assume that a company acquires a $20,000 asset estimated to have a six-year useful life and a $2,000 residual value. At the beginning of the third year, management decides that the asset will last for six more years. The revised estimate of useful life is, therefore, a total of eight years. Residual value stays at $2,000. Calculate the depreciation expense for the fourth year and for each of the remaining years