The number line shows the correct total, which is 4. The others don't have the correct sum. 1.5 + 2.5 will always equal 4. Therefore, Number line A represents 1.5 + 2.5.
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Answer: The first one.
Step-by-step explanation:
Since 1.5 + 2.5 = 4, and the only graph that has an arrow pointing to 4 is the first one, then the first number line is the correct answer.
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