Answer: 0.038 (There's a line of top of the number repeatedly infinitely)
Explanation:
Ok, we have to figure out what number is repeating itself.
0.038383838
We can see that 38 keeps repeating itself.
Therefore, in bar notation it would be 0.038 (There's a line of top of the number repeatedly infinitely, so write a line on top of 38)
I hope this helps!