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30 September, 16:30

A cold wave hit Chicago when the temperature was 62F. During the cold wave, the temperature dropped 2 degrees every hour. How many hours was it before the temperature was below 40F?

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Answers (2)
  1. 30 September, 16:46
    0
    First find the equation of the problem,

    y=-2x+62

    Plug 40 in for y

    40=-2x+62

    And solve for x

    -22=-2x (I subtracted 62 from both sides)

    x=11
  2. 30 September, 16:50
    0
    10 i subtracted 2 from 62 and kept going on subtracting the number I got.
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