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One winter day, the temperature at noon was -9f The temperature then rose by ​1/2 degree each hour for 3 hours before dropping by 2 1/4 degrees each hour for 2 hours. What was the temperature, in degrees Fahrenheit, at 5 PM?

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mhanifa

Answer:

  • The temperature at 5 PM was - 12°F

Step-by-step explanation:

One winter day, the temperature at noon was -9°F.

The temperature then rose by ​1/2 degree each hour for 3 hours:

  • 1/2 × 3 = 3/2 = 1 1/2

The temperature then dropped by 2 1/4 degrees each hour for 2 hours:

  • - 2 1/4 × 2 = - 4 2/4 = - 4 1/2

Now add up all three values to find the final value:

  • - 9 + 1 1/2 - 4 1/2 =
  • - 9 + 1 - 4 =
  • - 12

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