A truck acquired at a cost of $425,000 has an estimated residual value of $25,450, has an estimated useful life of 61,000 miles, and was driven 5,500 miles during the ye Determine the following. If required, round your answer for the depreciation rate to two decimal places. (a) The depreciable cost (b) The depreciation rate (c) The units-of-activity depreclation for the year