Question

The table below shows the average diameter of pupil in a person's eye as he or she grows older.What is the average rate of change, in millimeters per year, of a person's pupil diameter from age 20 to age 80?2.4-2.40.04-0.04

Answer 1

Average rate of change = (change in pupil diameter) / (change in age)

then we have:

`(2.3\text{ - 4.7) / (80 - 20 ) = -0.04 }`

so the change is -.04 mm per year