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Sal is incorrect because he said 4 instead of -4 so the weather had changed 26 degrees, not 18

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Sal is wrong the correct

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Sal is wrong because it's -4 not 4 they are different numbers.

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Sal is wrong because it was a -4 not a regular 4.  The correct answer is 26.  The rule when adding negative to positive is- count backwards, as if you were subtracting. So Sal counted forwards instead of counting backwards which is why she got the answer 22 instead of 26.

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Sal is wrong because she put 4 instead of -4 the temperature started at 4-, the answer is 26 not 18.

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Sal is wrong because 4 and -4 are different numbers and if you answer with -4 then you would have to add 26 but the correct answer is 4. -4 + 26 = 22. If he/she started at 4 degrees F then he/sh would be correct

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sal is wrong because she put 4 instead of -4 so that means the answer would be 26

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Sal is wrong, because the temperature started at -4 degrees, not 4 degrees, so the answer is 26 not 18. He needs to

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Sal is wrong because it is -4 instead of just 4.

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Sal is wrong because it was -4 not 4 so you have to do 22- -4 which is 26 not 18

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Sal is wrong because  it's -4 and not 4

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Sal is wrong because it was -4 not 4 so the real answer is 26.

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Sal is wrong because she did 4 instead of -4 while the temperature at 7:30 was -4. Her mistake was she thought it was a normal 4. It adds 4 to the 22 she did before making the difference 26.

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sal is wrong because

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Sal is wrong because instead of 4, it is -4 as the first recorded temperature. Therefore, you need to count the distance from -4 to 0 and add it to the distance of 0 to 22 (4 + 22). 4 + 22 = 26. This is the concept of absolute value. Sal needs to add |-4| + 22. The answer is 26

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Sal is wrong because when you subtract a negative number from a positive number or she could have added 4 instead of subtracting -4. So the right answer should be 26.

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Sal is wrong because the difference between -4 and and 22 is 26 not 18 because if it started at 4 that would be correct but it started at -4 not 4.

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Sal is wrong because it was -4 not 4 so you need to do 22 - -4 or 22 + 4 which is 26 degrees, not 18.

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Sal is wrong because if the temperature started at 4 degrees F, then she would be correct.  At 7:30 it was -4 degrees F so the answer would be 26 degrees F because -4 + 26 = 22. That is why 26 is the answer.