Richard caught f fish two weeks ago and 32 fish last week.
how many fish has richard caught these last two weeks combined?
write your answer as an expression.

If the answer needs to be in an expression then the answer is 32 + f because we don't know how many fish he caught the first week

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.