### Home > CCG > Chapter 9 > Lesson 9.1.2 > Problem9-24

9-24.

At the band’s peak of popularity, a personally signed Black Diamond poster sold for $$500$. Three years later the band was almost forgotten and the poster was worth only$$10$. What were the annual multiplier and annual percent of decrease? Homework Help ✎

An exponential function is always of the form $y = ab^x$