### Home > CCA > Chapter 4 > Lesson 4.3.1 > Problem 4-100

4-100.

A tile pattern has 10 tiles in Figure 2 and increases by 2 tiles for each figure. Find a rule for this pattern and then determine how many tiles are in Figure 100. Homework Help ✎

Work backwards from Figure 2 to find out the starting number of tiles.

Consider using a table, illustration, or graph to help you solve.

*y* = *mx* + *b*

*m* = growth rate*b* = starting number of tiles

To find how many tiles are in figure 100, substitute 100 for *x* and solve for *y*.

206 tiles.