Fifty-three plus four times c is as much as 21 translated into a equation

I'm thinking it's ... 53 + 4c ≥ 21 .
I say 'less than or equal to' b/c it says as much as, meaning it can't go over 21.

Hope this helps & makes sense ! (:

53+4xc=21 I believe is the answer to the question because it says "As much" which is like equal. Hope this is right and helpful.

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.