Mitch and his brother austin started at their house and biked 8 kilometers west and 14 kilometers south. if they could take a straight diagonal route back home, about how far would they have to ride? show your work.

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.