Joe has m state quarters. Bob has 3 more quarters than Joe. Pat has 2 times as many quarters as Bob. Write and simplify an expression to show how many state quarters they have in all.

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.