Typo in the textbook: page 806, the APY formula: (1+r)/n should be 1+(r/n)
A differnt Savings Formula in the textbook, bottom of page 810: the n in it is the total number, not annual number, of compounding periods (so it replaces the nt in the formula of the slide).
Consumer Price Index: Homepage, Urban Consumers
Should I Invest in "Forever" Stamps?
Assignment: Chapter 21 Exercises No. 3, 4, 9, 17-22, 29(a), 30