2. For each table of values, write the expression that relates the numbers in the first column to those in the second column.

ex. 3a + 2 = b

3. a) Create a table of values to show the number of squares for the first 4 figures. 

   b) Write the pattern rule that relates the figure number to its number of squares.

   c) Write this pattern rule as an expression.

   d) Draw a diagram showing the number of squares for figure 7. How many squares are there?

5. a) Write the pattern rule that relates each number to its amount. 

   b) Write this pattern rule as an expression.