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Figure 3 of a tile pattern has 11 tiles, while Figure 4 has 13 tiles. The pattern grows at a constant rate.  

  1. Write an equation to represent this situation.

    Make a table for the pattern. Use the table to write your equation.

    How much does the number of tiles increase as the figure number increases?

  2. Which figure will contain  tiles?

    Let in the equation. Then solve for .