An office copier has an initial price of $2,600. A service contract costs $100 for the first year and increases $60 per year thereafter. It can be shown that the total cost of the copier after n years is given by C(n) =2,600 + 70n + 30n2. C(n) The average cost per year for n years is given by C(n) = n Complete parts (A) through (D) (A) Find the rational function C. C(n) =