Answer:
The depreciation expense under straight-line method for 2019 is $6,900
Step-by-step explanation:
In order to calculate the depreciation expense under straight-line method for 2019 we would have to make the following calculation:
Depreciation expenses from 1st October to 31st December 2019= [Depreciation expenses× Number of months machine used / total number of months
Depreciation expenses= Machine cost−Salvage value/useful life
=$150,000-$12,000/5
=$27,600
Depreciation expenses from 1st October to 31st December 2019= $27,600 * 3 monts/12 months
=$6,900
The depreciation expense under straight-line method for 2019 is $6,900