The graph shows the water level in a bathtub, in inches, over time, t, in minutes.
For which values of t (time) is the water level unchanging?
Choose all answers that are correct.
A.
from t = 0 to t = 3
B.
from t = 3 to t = 5
C.
from t = 5 to t = 7
D.
from t = 7 to t = 12
E.
from t = 12 to t = 15
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