### Home > CAAC > Chapter 4 > Lesson 4.1.3 > Problem 4-21

4-21.

What is the growth between the number of tiles in each figure?

What is the growth between the number of tiles in each figure?

What is the starting amount?

*y* = 2*x* + 3

4-21.

What is the growth between the number of tiles in each figure?

What is the growth between the number of tiles in each figure?

What is the starting amount?

*y* = 2*x* + 3