Among the immigrants, the largest occupation group are the Laborers. During the 1800's, a lot of factories and mines were in operation. Immigrants did not have the set of skills and knowledge to enter into certain jobs. Laborer jobs did not require much skill and knowledge and so it was easy for immigrants to get the job.
Right before the big algebra test, the dinosaur felt like he was a <u>nervous rex</u> (nervous wreck, get it?).
This showcases a play of words in the Punchline Algebra book, wherein the answers somewhat rhyme with the correct word that describes the situation.