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Anita checks the temperature at noon and sees that it is 3 ˚F. Her brother notes that this is a change of 8 ˚F from the temperature at 9 a.m. Anita knows that this means there are two possibilities for the temperature at 9 a.m.

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Answer:

At 9 a.m., the temperature was 11 ˚F or -5 ˚F.

Step-by-step explanation:

Temperature at noon: 3 ˚F

Temperature at 9 a.m.: 8 ˚F higher or lower than 3 ˚F

Temperature at 9 a.m.:

3 ˚F + 8 ˚F = 11 ˚F

or

3 ˚F - 8 ˚F = -5 ˚F

Answer: At 9 a.m., the temperature was 11 ˚F or -5 ˚F.

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