Answered

The table below shows the distance d(t) in meters that an object travels in t seconds:


t
(seconds) d(t)
(meters)
3
126
4
224
5
350
6
504


What is the average rate of change of d(t) between 3 seconds and 5 seconds, and what does it represent?



Answer :

average change in d(t)   =    (350-126) / (5-3) =  112 m/s

This represents the average speed of the object during the 2 second period between  t = 3 and t = 5.