Question 22119
The machine depreciated from $5000 to $150 for a total depreciation of $4850 over 10 years.  This is a depreciation of $4850/10yr = $485 per year.


The machine begins with a value of %5000.  After t years, it depreciates a total of 485t.  Therefore, the formula for the value of the machine after t years is 
V(t) = $5000 - 485t, {{{0<=t<=10}}}


R^2 at SCC