The answer is C) 67
Angle FGE is a right angle so it is 90 degrees and angle AGF is the same as CGD so it is 23 degrees.
Add angle FGE and angle AGF together (90 + 23 = 113) and subtract that by 180 (180 - 113 = 67)
Use an online math calculator for more accurate answers just plug in the variables
-2(x+9)-6=-24
-2x-18-6=-24
2x=0
x=0
2(x+9)-6=-24
2x+18-6=-24
2x=-36
x=-18
The answer would be $3 becaus of x = $12 and y = $9. $12 - $9 = $3.