ABC Corporation purchased a new piece of equipment for $150,000 on January 1, 2022. The company uses the double-declining balance method of depreciation and estimates the equipment's useful life to be 5 years, with no residual value. On December 31, 2024, the company determines that the equipment's remaining useful life is 2 years, and its estimated residual value is $10,000.

a) Calculate the depreciation expense for 2022, 2023, and 2024.
b) Calculate the carrying value of the equipment on December 31, 2024, assuming the original estimates of useful life and residual value were used.
c) Calculate the revised annual depreciation expense for 2024, assuming the revised estimates of useful life and residual value are used.
d) Calculate the carrying value of the equipment on December 31, 2024, assuming the revised estimates of useful life and residual value are used.
e) Prepare the adjusting journal entry to record the revised depreciation expense as of December 31, 2024.