Mathematics

Problem

AMC 8,2023 Problem 3 Wind chill is a measure of how cold people feel when exposed to wind outside. A good estimate for wind chill can be found using this calculation

\text{(wind chill)} = \text{(air temperature)} - 0.7 \times \text{(wind speed)}

where temperature is measured in degrees Fahrenheit (

^{\circ}\text{F}

) and the wind speed is measured in miles per hour (mph). Suppose the air temperature is

36^{\circ}\text{F}

and the wind speed is 18 mph. Which of the following is closest to the approximate wind chill?

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