What is the area of this circle? (express your answer using π.)
(note: the diameter is 6 m.)

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.

Step 1: 6x-10=1; step 2: 6x=11