Use the following to answer questions 5 15 (Straight Line, 180% declining balance and Activity Based) R Transport purchased a new semi-trailer truck for an acquisition cost of $300,000. The company estimates the truck will have a residual value of $50,000 when they are done using it at the end of 5 years or about 500,000 miles. Answer 5-8 based on Straight line depreciation 5. $ 6. $ 7. $ Year 2 depreciation expense Book value at the end of year 2 Accumulated depreciation for year 3 8. $ Book value at the end of year 3