A gas is collected and found to fill 4.73 L at 35.0°C. What will be its volume at standard temperature (273 K)?

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.

It would be 3x+3 because the skate rental is for the day and she spent 3 hours skating. hope this !