Answer:
$7,000
Step-by-step explanation:
depreciation expense using straight line method = (purchase cost - salvage value) / useful life = ($53,400 - $3,000) / 6 years ) = $8,400 per year
since the machine was used for 10 months, the depreciation expense for 2017 = $8,400 x 10/12 = $7,000
the adjusting journal entry should be:
December 31, 2017, depreciation expense
Dr Depreciation expense 7,000
Cr Accumulated depreciation - copy machine 7,000