Final answer:
The amount of yearly depreciation of Acadia's MP3 player is $75.
Step-by-step explanation:
To find the amount of yearly depreciation of Acadia's MP3 player, we can use the formula for linear depreciation:
Depreciation = (Initial value - Final value) / Time
Substituting the given values:
Depreciation = ($350 - $125) / 3 years = $225 / 3 years = $75 per year
Therefore, the correct answer is $75 (option b).