The table below shows the distance d(t) in meters that an object travels in t seconds:
t
(seconds)
d(t)
(meters)
1
15
2
60
3
135
4
240
what is the average rate of change of d(t) between 2 seconds and 4 seconds, and what does it represent?
50 m/s; it represents the average speed of the object between 2 seconds and 4 seconds
90 m/s; it represents the average speed of the object between 2 seconds and 4 seconds
90 m/s; it represents the average distance traveled by the object between 2 seconds and 4 seconds
50 m/s; it represents the average distance traveled by the object between 2 seconds and 6 seconds