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Answer:
2.5
Step-by-step explanation:
The graph shows the curve extends downward to y = 2.5 in several places.
2.5 is the minimum value
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Additional comment
In this case, we assume the arrows at the ends of the curve mean the curve continues in the same fashion (same period and amplitude) as the part shown. For some graphs, arrows at the ends of the curve mean the graph extends to infinity in that direction.
