On January 3, 2020, Xenex Innovations purchased computer equipment for $137,000. The equipment will be used in research and development activities for five years or a total of 10,000 hours and then sold for about $20,000. Assume actual usage in hours of: 2020 1,650 2021 1,840 2022 3,000 2023 3,540 2024 3,300 Required: Calculate depreciation expense and book values for each year of the equipment's life for each method of depreciation using the table provided below. Xenex's year-end is December 31. (Do not round intermediate calculations.)