Speedy Delivery Company purchases a delivery van for $33,600. Speedy estimates that at the end of its four-year service life, the van will be worth $5,200. During the four-year period, the company expects to drive the van 177,500 miles. Actual miles driven each year were 46,000 miles in year 1 and 51,000 miles in year 2.Required:Calculate annual depreciation for the first two years of the van using each of the following methods.