The straight line depreciation expense in 2022 is $1500.
The straight line depreciation expense in 2023 is $3000.
The striaght line depreciation method spreads out the depreciation expense equally over the useful life of the project.
Straight line depreciation expense = (Cost of asset - Salvage value) / useful life
($32,000 - $4,000) / 8 = $3000
The depreciation expense each year would be $3000 except in 2022 when the truck was used for 6 months.
Depreciation expense in 2022 = 6/12(3000) = $1500
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