Answer:
10.
Step-by-step explanation:
AK = KB so
3x + 1 = 1/3 x + 9
3x - 1/3 x = 9 - 1 = 8
Multiply through by 3:
9x - x = 24
8x = 24
x = 3
So AK = 3(3) + 1 = 10.
the answer would be 10
I got it right on my test :)
