How do I figure this out?

The fax mailer brought a fax mcahine for $600. The fax machine depreciates at a rate of $20 a month.

(a) find a function F that can be used to determine the value of the fax machine t months after purchase
complete the model below:
f (t) = ?

1 answer

What you don't know is the # of months, so t would represent that number. If you lost $20/month, you would show this by multiplying 20 and t. Since the total price is $600, you would subtract what you were losing from the $600 to get your answer. Hope this helps :-).
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