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At 7:00 a.m., the temperature was $- 6 ° F$ . The temperature was 8 $° F$ higher at noon. Which one of the following expressions can be used to calculate the temperature at noon?

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(- 6 + 8) ° F

(- 6 - 8) ° F

(8 + 6) ° F

(- 6 + (- 8)) ° F

answer is A.

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Detailed Solution

Given that,
Temperature at 7:00 a.m. is

- 6 ° F

.
At noon temperature increases by

8 ° F

,
Hence new temperature is the sum of temperature at 7:00 a.m. and the increase in temperature at noon,

(- 6 + 8) ° F

.
Therefore, option (1) is correct.

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