Answer:
Step-by-step explanation:
ok
9x - 9 > = 2(8x - 15)
9x - 9 > = 16x - 30
9x - 16x > = -30 + 9
-7x > = - 21
x < = -21/-7
x < = 3
closed circle on 3, shaded to the left
She forgot about the final x at the end, because the first expression is 3x+6+x, and the second one is 3(x+2). The second one expands to 3x+6, but it doesn't have the final term at the end.
Also, 3 is not really a factor of x (technically it could be because x in unknown, but in terms of like terms and stuff it isn't) so you can't take a 3 out of x (unless you leave it as 1/3x I guess).
Anyway, yeah she forgot about the final x and therefore the factor she took out is incorrect anyway. She also could've simplified the first expression so that it became 4x + 6
