a hospital's revenue (in millions of dollars) is projected to be R(x)=7x^2-3x+18 and its costs (in millions of dollars) are projected to be C(x)=3x^2+x-89 where x represents the number of years into the future. a. create the profit function for the hospital. b. what is the average rate of change in the profit from year 3 to year 5 ?
