I’m so confused?? what’s the question?
Well... the segment FG = 4x + 3, the segment GH = 7x - 12, now, the
segment FH = FG + GH, those two fellows added up, and we know that FG and GH are both equal halves because G is the midpoint.
thus, FG = GH
or

and fairly sure, you know how much that is.
Answer:

Step-by-step explanation:

Expand:


Add 27 to both sides:


Add 12x to both sides:


Divide both sides by 4:


Answer:
12
Step-by-step explanation:
12 because that's how many dots/vertices are shown(sorry if im wrong)
The temperature would be (21.5 + 6.25) which is 27.75