A demographer develops the function P(x) = 12,500 + 320x - 0. 25x to represent the population of the town of Calcville x years from today. a. Determine the present population of the town. b. Find the rate of change of the population in 3 years and in 8 years. c. When will the population reach 16, 294? d. When will the rate of growth of the population be 245 people per year? e. Is the rate of change of the population increasing or decreasing? Explain