<h2>Answer:</h2><h2>The value after 0 years = $ 800</h2><h2>The value after 1 year = $600</h2><h2>The value after 2 years = $450</h2><h2>The value after 3 years = $337.5</h2><h2>The value after n years = computer cost at (n-1) year - 
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Step-by-step explanation:
The cost of computer = $ 800
It losed 1/4th of value every year.
The value of computer after 0 years = cost of computer = $ 800
The value after 1 year = 800 - ( ) = $600
The value after 2 years = 600 - ( ) = $450
The value after 3 years = 450 - ( ) = $337.5
The value after n years = computer cost at (n-1) year -