Final answer:
To calculate the annual depreciation expense, subtract the residual value from the initial cost of the equipment and divide it by the expected useful life of the equipment.
Step-by-step explanation:
The question is related to accounting and can be categorized under the subject of Business. It involves calculating depreciation expense for equipment.
To calculate the annual depreciation expense, we need to subtract the residual value from the initial cost of the equipment and divide it by the expected useful life of the equipment.
In this case, the initial cost of the equipment is $42,000 and the residual value is $3,300. The useful life is given as five years.
Annual depreciation expense = (Initial cost - Residual value) / Useful life
= ($42,000 - $3,300) / 5
= $38,700 / 5
= $7,740
Therefore, the annual depreciation expense is $7,740.