3) The table to the right shows the average diameter of a pupil in a person's eye as he or grows older. What is the average rate of change, in millimeters per year, of a person' pupil diameter from age 20 to age 80? 1) 2.4 2) 0.04 3) -2.4 4) -0.04 Age Average Pupil (years) Diameter (mm) 20 4.7 30 4.3 40 3.9 50 3.5 60 3.1 70 2.7 80 2.3