### Home > AC > Chapter 12 > Lesson 12.4.2 > Problem 12-73

12-73.

If a tile pattern can be described by the equation , where

*represents the figure number and*

*represents the number of tiles, find each of the following.*

The number of tiles in Figure

. Substitute 307 into the equation for

.Solve for

.The number of the figure that contains

tiles. Set

.Solve for

.