joe wants to make a scale drawing of a flower for mrs Samuelson. she wants him to use a scale of 2 cm:5in. If the flower is 8 in height in real life, how high should he make his drawing?

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.