the number of printers sold since 2003 at mike's office supply store can be modeled by the function N (t) = 15t + 85 and the price per printer can be modeled by P (t) = 15t2 - 32t + 126, where t is the number of years since 2003. according to this model. what is the total amount of revenue generated by the sales of printers in the office supply store in 2009?