2. The table below shows the average diameter of a pupil in a person's eye as he or she grows. What is the average rate of change, in mm per year,
of a person's pupil diameter from age 30 to age 70?
Age
(years)
Average Pupil
Diameter (mm)
20
4.7
30
4.3
1) -1.6
2) 40
40
3.9
3) -0.04
4) 0.04
50
3.5
60
3.1
70
2.7