"You will now submit the portfolio that you started working on in the Percent Equations lesson on Slide 4.

Have you ever heard older people talk about prices in the past?

"When I was your age, you could get a candy bar for a nickel!"

It's usually followed with a complaint about how expensive stuff is today . . . something like, "$5.99 for a candy bar! Highway robbery!"

It is true that prices for most things go up over time. But how much do they go up, and how fast? Is it possible to predict prices in the future?