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Which of the following is true for the interval from 3-5 seconds

Which of the following is true for the interval from 3-5 seconds-example-1

1 Answer

6 votes

Answer:

Option C

Explanation:

The given function is:
h(t)=-16t^2+80t+108.


h(5)=-16(5)^2+80(5)+108=108.


h(3)=-16(3)^2+80(3)+108=204.

The average rate of change of this function on the interval t=3 to t=5 is given by:


(h(5)-h(3))/(5-3)


(204-108)/(2)=-48

Since the average rate of change is negative on the interval 3-5 seconds, it means the ball is moving downwards at an average rate of 48 feet per second.

The correct choice is C.

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