Answer:
$5600
Step-by-step explanation:
The amount of depreciation expense for year 1
depreciation under the first year under units of activity method
[ (cost - salvage value) / estimated machine hours ] * actual machine hours worked in the first year
= [(70000 - 14000) / 40000 ] * 4000
= 56000 / 40000 ) * 4000
= 1.4 * 4000 = $5600 ( amount of depreciation expense for year 1 )