Deuce Company purchased a truck for $80,000 on January 1, 2018. The asset has an expected salvage value of $8,000 at the end of its five-year useful life.

Calculate depreciation expense in 2019 (the second year) under:

1. Straight-line depreciation? (2 points)
2. Double-declining balance depreciation? (3 points)
3. Sum-of-years digits depreciation? (3 points)