Remaining book value - Revised residual value Revised remaining useful life 11. In early January 2023, a cellphone repair shop acquires equipment at a cost of $3,800. The company estimates this equipment to have a useful life of three years and a residual value of $200. Early in 2025, the controller at the shop changes its estimate to a total four-year useful life and zero residual value. Using straight-line depreciation, what is depreciation expense on this equipment for the year ended December 31, 2025