Chec Banko Inc. manufactures sporting goods. The following information applies to a machine purchased on January 1, 2018: Purchase price Delivery cost Installation charge2,000 Estimated life Estimated units Salvage estimate $70,500 $ 8,000 5 years 151,000 $ 5,000 During 2018, the machine produced 47000 units and during 2019, it poduced 49.000 units Required Determine the amount of depreciation expense for 2018 and 2019 using each of the following methods: ces 2018 2019 a Straight-line b. c. Units of production