I think I need to hire an editor to check my work. Anybody interested in a job?

If you got to #17 on the Review you probably then noticed that there are two 17’s. But what about the answer to the second #17? Here’s the scoop.

Question #17 goes with Answer #17

Second Question #17 goes with Answer #18

Question #18 has no answer: The answers are: x=24 sq rt 3 and y=12 sq rt 3

I checked all the answers from #19 to #29 and they are ok.