The value of the 7 in 34.72 is how many times the value of the 7 in 28.097

The value of the 7 in 34.72 is 100 times the value of the 7 in 28.097. The 

7=value of tenths and the other one I don't know

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.