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

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?

a. 50 m/s; it represents the average speed of the object between 2 seconds and 4 seconds

b. 90 m/s; it represents the average speed of the object between 2 seconds and 4 seconds

c. 90 m/s; it represents the average distance traveled by the object between 2 seconds and 4 seconds

d. 50 m/s; it represents the average distance traveled by the object between 2 seconds and 6 seconds

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