### Home > CAAC > Chapter 6 > Lesson 6.2.4 > Problem 6-76

6-76.

Make either an illustration, a graph, or a table and work backward (using the growth rate) to find the starting number of tiles at Figure 0.

Use the starting number of tiles and the growth rate to write a rule where *y* = the total number of tiles and *x* = the figure number.

Plug in 50 for *x* and solve for *y* to find the number of tiles that Figure 50 will have.

Figure 50 will have 105 tiles.