HSA 2008 Algebra/Data Analysis Item 12print

HSA 2008 Algebra/Data Analysis Item 12

CID
CID10fe8785fc35bcd53e0e5b647749c3aa
itemNum
12
initialLetter
F
itemType
SR
itemAnswerKey
3
itemMaxScorePoints
1
origNum
19

The following formula can be used to find the wind-chill temperature (w) when the wind speed is 20 miles per hour.

w = −39 + three halfst (t = actual air temperature)

Which of these is the actual air temperature if the wind-chill temperature is −12°?

  1. −57°
  2. −21°
  3. 18°
  4. 41°

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