The total of a regular polygon's interior angles is 3420°. What is the size of each exterior angle? Give your answer to two decimal places.

$7.50x+$4.50y=midk it's been awhile since i've done one of these

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.