### Home > A2C > Chapter 12 > Lesson 12.4.1 > Problem 12-170

12-170.

First find the common ratio, then use the formula for an infinite geometric series.

Look back at (a) and explore what that answer means.

12-170.

First find the common ratio, then use the formula for an infinite geometric series.

Look back at (a) and explore what that answer means.