Final answer:
To calculate the annual depreciation expense, use the straight-line method. The book value and accumulated depreciation depend on specific factors not provided in the question.
Step-by-step explanation:
To calculate the annual depreciation expense for the machine, you need to know the initial cost, estimated salvage value, and useful life of the machine. The most common method used to calculate depreciation expense is the straight-line method. This method divides the cost of the machine minus the estimated salvage value by the useful life in years.
The book value of the machine at the end of 2023 can be calculated by subtracting the accumulated depreciation from the initial cost of the machine. Since the question did not provide the initial cost, it's not possible to determine the book value without that information.
The accumulated depreciation for the machine at the end of 2023 can be calculated by multiplying the annual depreciation expense by the number of years of depreciation, in this case, 2023 minus the year the machine was acquired. However, without knowing the acquisition year or any depreciation expense information, it's not possible to determine the accumulated depreciation.