Pittsburgh because -9°F is colder than -7<span>°F</span>
Answer:
line HJ, because line with slope 1/2 is AB=2/4=1/2.
AB is perpendicular to HJ, because it forms right angle
4(-3)-3/(-3)+6
-12-3/-3+6
-12+1+6
-12+7
-5
Reasonable because the three items altogether cost about $40