## Use the pattern above to answer these questions.

- Each square represents one tile, how many total tiles are in Step 5? Step 6?
- What might you do to determine the number of tiles in Step 25?
- Write a rule to predict the total number of tiles for any step. Show how your rule relates to the pattern.
- Try to think of a different rule that you can use to predict the total number of tiles for any step. Show how your rule relates to the pattern.
- Andrew also solved this problem and came up with following equation: s = 1 + 3(n-1). How does each piece of his expression show up in the pattern?
- Tami came up with the equation s = 3n – 2. How does each piece of her expression show up in the pattern?