PQR Corporation purchased equipment to be used in manufacturing. The purchase was made at the beginning of 2020 by paying cash of $150,000. The equipment has an estimated residual value of $10,000 and an expected useful life of 10 years. At the beginning of 2022, PQR concluded that the total useful life of the equipment will be 8 years rather than 10, and that the residual value will be zero. PQR uses the straight-line method for depreciation and prepares financial statements annually as of December 31. No adjusting entries are made other than at year-end. Required: A. Prepare the journal entry to record depreciation on the equipment for 2021 (as of 12/31/21). B. Prepare the journal entry to record depreciation on the equipment for 2022 (as of 12/31/22), including the effect of the changes in estimates.