A differnt Savings Formula in the textbook, bottom of page 684: 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?

**Homework**: Chapter 21 Exercises No. 2, 5, 9, 26, 41