Answer:
$8,400
Explanation:
Calculation for what is the amortization expense for the year ended December 31, 2022
Using this formula
Amortization expense=Patents/Expected useful life
Let plug in the formula
Amortization expense=$42,000 / 5 years
Amortization expense = $8,400
Therefore the amortization expense for the year ended December 31, 2022 will be $8,400