3. Cans of paint cost $10.90 per quart. You also need to buy a “painting kit” that include brushes, rollers, a tray, and a plastic drop sheet for $20. You have a coupon for 20% off all quart-sized paint cans. How much will all of your painting supplies cost?

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.