Straight-Line Depreciation A building acquired at the beginning of the year at a cost of $139,400 has an estimated residual value of $5,400 and an estimated useful life of 10 years. Determine the following: (a) The depreciable cost (b) The straight-line rate (c) The annual straight-line depreciation $ Units-of-activity Depreciation A truck acquired at a cost of $340,000 has an estimated residual value of $20,200, has an estimated useful life of 52,000 miles, and was driven 4,700 miles during the year. Determine the following. If required, round your answer for the depreciation rate to two decimal places. (a) The Depreciable Cost (b) The Depreciation Rate per mile (c) The Units-of-activity Depreciation for the Year $