Answer:
5
Explanation:
I played a video game for 15 minutes and I lose 75 points.
So, at time = 0, point loss =0, and at time = 15 minutes, point loss = 75.
Therefore, the mean change in points per minute is = ( total loss of points / total minutes of playing the game )
=
= 5 points per minute.
Hence, the integer 5 represents the mean change in points per minute. (Answer)