On January 3, 2020, Xenex Innovations purchased computer equipment for $151,000. The equipment will be used in research and development activities for five years or a total of 8,000 hours and then sold for about $27,000. Assume actual usage in hours of: 2020 2021 2022 2023 2024 2,000 1,910 3,700 3,110 4,000 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.)