Answer:
average rate of change of the plane = average speed = [tex]\frac{40}{5} =8\frac{feet}{s}[/tex]
Step-by-step explanation:
we know that
average rate of change of the plane = average speed of the plane
average speed = (change in distance)/(change in time)
since th goes from 15 feet to 55 feet from 2 seconds to 7 seconds
change in time = final time - initial time = 7-2 = 5 seconds.
change in distance = final distance - initial distance
= 55-15 = 40 feet.
therefore average speed = [tex]\frac{40}{5} =8\frac{feet}{s}[/tex]
