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7 March, 20:03

Tracey's dog weighed 38.5 pounds. Tracey weighed her dog and found that the dog lost 1/2 pound each month for three months. Tracey used the expression 38.5 + 3 (0.5) to find her dog's weight at the end of the 3 months. What is the error in Tracey's expression?

A. Tracey's dog weighed more in 3 months and the expression she wrote will result in a lower weight.

. Tracey should have added 3 and 0.5 instead of multiplying to find the dog's new weight.

C. Tracey should have multiplied 3 and 38.5 and then subtracted 0.5 to find the dog's new weight.

D. Tracey's dog is losing weight so she should have used - 0.5 instead of 0.5 in the expression.

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Answers (2)
  1. 7 March, 20:20
    0
    Answer: D
  2. 7 March, 20:29
    0
    It is d. You should be subtracting the weight and not adding it.
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