14) The table shows the average diameter of a pupil Age Average Pupil in a person's eye as he or (years) Diameter (mm) she grows older. What is the 20 4.7 average rate of change, in 30 4.3 millimeters per year, of a 40 3.9 person's pupil diameter 50 3.5 from age 20 to age 807 60 3.1 70 2.7 1) 2.4 80 2.3