On January 1, 2018, a machine was purchased for $97,500. The machine has an estimated salvage value of $6,480 and an estimated useful life of 5 years. The machine can operate for 111,000 hours before it needs to be replaced. The company closed its books on December 31 and operates the machine as follows: 2018, 22,200 hrs; 2019,27,750 hrs; 2020, 16,650 hrs; 2021, 33,300 hrs; and 2022, 11, 100 hrs. (a) Compute the annual depreciation charges over the machine's life assuming a December 31 year-end for each of the following depreciation methods. (Round answers to O decimal places, e.g. 45,892.) 1. Straight-line Method $ 18204 2. Activity Method Year 2018 $ 2019 $ 2020 $ 2021 $ 2022 $ Sum-or-the-Years -Digits Method Year 2018 $ 2019 2020 $ LA 2021 2022 4. Double-Declining-Balance Method Year 2018 $ 2019 $ 2020 2021 $ 2022 $