Day 2: mat385

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Check-up, Section 1.1
Problems from section 1.1:
- Problems from homework (by students):
  - at seats: #1, 2(a,c), 3, 4
  - on board (will substitute!): #11(f,h), 19(b), 21, 28
  - Homework will be due next Tuesday, and collected at the beginning of the hour. Any questions about the homework should come before Tuesday! In general, homework is due one week after it is assigned.
Section 1.2:
- Overview, with a few problems (practice or otherwise) from section 1.2
- Bonus homework problem: question #6 from a "Mensa Quiz". "The people of American Mensa, the High IQ Society, have put together 10 teasers...." Here's one:
  If 1/2 of 24 were 8, what would 1/3 of 18 be?
  Give the correct answer for extra credit.
  Hint: their answer, 4, is incorrect - they're not as smart as they think! Here's their "solution" - what's wrong with it?
  They're also wrong about question #4; why? Notice, however, that when these folks want to find out how smart you are, they ask you a bunch of math questions!