Chapter 5 - Number Theory and the Real Number System - 5.2 The Integers; Order of Operations - Exercise Set 5.2 - Page 271: 133

$-2^\circ F$

At $5^\circ F$ with winds at 50 miles per hour the windchill temperature according to the table is: $-24^\circ F$. At $-10^\circ F$ with winds at 5 miles per hour the windchill temperature according to the table is: $-22^\circ F$. Thus the difference is: $-24-(-22)=-2^\circ F$