Answer:
a.
Debit : impairment $450,000
Credit : Accumulated impairment $450,000
b.
Debit : amortization $40,200
Credit : Accumulated amortization $40,200
Step-by-step explanation:
Journal entry to record the impairment of the asset at December 31, 2020.
Journal entry to record amortization expense for 2021 related to the copyrights.