Algebraic Expression: There are c cyclists in a cycle race. 3/4 of the cyclists finish the race. How many cyclists did not finish the race?

c - 3/4
Explanation:
Subtract 3/4 from c to find how many cyclists did not finish the race.

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.