Martina earns $4,000 per month. each month she pays $680 in federal income tax,$160 in state income tax, and $79 in other taxes. what is martina's pay after taxes each month?

Subtract what she pays from what she makes: 4000-680-160-79=3,081. She now has $3,081 :)

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.