posted by Anonymous .
cost analysis with graph
office copier has an initial price of $2500. A service contract costs $200 for the first year and increases $50 per year thereafter. It can be shown that the total cost of the copier after n years is given by C(n)= 2500 +175n +25n^2. The average cost per year for n years is .
1.. Write the equation for the average cost.
2. plot the equation for the average cost for year 2 up to 20 (this is the domain of the function.
3. During what year is the average cost at a minimum (between years 2 and 20)
4. When is the average cost per year at a minimum and what is the minimum average