8 An aquarium is being filled with water. The graph shows the height of the water over time as
the aquarium is being filled.
Aquarium
20
15
Height (inches)
10
5
8
9
0 1 2 3 4 5 6 7
Time (seconds)
Which statement best describes the rate of change for this situation?
A The height of the water increases 20 inches per second,
B The height of the water increases 1 inch per second.
The height of the water increases 5 inches per second.
D The height of the water increases 2.5 inches per second.