Chubbyville purchases a delivery van for $23,000. Chubbyville estimates a four-year service life and a residual value of $2,000. During the four-year period, the company expects to drive the van 105,000 miles. Required: Calculate annual depreciation for the four-year life of the van using each of the following methods. Straight-line Double-declining-balance Activity-based (Actual miles driven each year were 19,000 miles in Year 1; 29,000 miles in Year 2; 24,000 miles in Year 3; and 26,000