Answer:
everything "above" the straight line 9-3x=0
Step-by-step explanation:
3x+y>9
y>9-3x so the plane is limited by the straight line 9-3x
x= -9
7(x+2) = -49
7(x+2)/7 = -49/7
x+2 = -7
x+2-2 = -7-2
x = -9
The answer is C
Remember it says 13' below zero, and 121' is the highest temperature.
10
The answer is 2.{5,14}
