Chapter 2: Solving Equations and Inequalities 
Numbers in the Real World

Heat Index
 

The heat index is the temperature that your body feels, not the air temperature that the thermometer measures.  The relative humidity combines with the air temperature to create the heat index.  For more information on this, click here. 


According to the chart above, how much difference could there be in the heat index for an air temperature of 70 degrees?
Which air temperature has the greatest fluctuation in heat index?
the least?

If the relative humidity is 35 percent, how much will the heat index increase if the temperature rises from 70 to 85 degrees during the day?

If the relative humidity is 25 percent and the temperature is 80 degrees in the morning, and the afternoon yields relative humidity of 15 percent and temperature of 105 degrees, what was the heat index in the morning and afternoon?

If the radio station broadcasted a heat index of 115, and you checked your thermometer reading of 100 degrees, what is the relative humidity?

If the relative humidity is at 95%, how high can the temperature get? 

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