Question 446677
The fax mailer bought a fax machine for $600. The fax machine depreciates at a rate of $20.a month. 
Find a function F that can be used to determine the value of the fax machine t months after purchase. 
Complete the model and graph. F(t) = 600 - 20m
----
{{{graph(400,300,-10,45,-55,650,-20x + 600)}}}
-----
Cheers,
Stan H.
=========