(1 pt) In cold weather, we feel colder when the wind blows. This is quantified by the wind chill index W which is supposed to predict how cold we will feel for a given air temperature 71 in degrees Fahrenheit, and wind speed V in miles/hour. The National Weather Service uses the following formula: W 35.74+0.62157-35.7510.16+0.42757V0.16 for T