CPM Homework Help : INT2 Problem 5-5

Examine the tile pattern below. Based on the information provided for Figures 1 through 4, answer the questions below.

	tile $\space$
tile $\space$

Figure $1$

Figure $2$

Figure $3$

Figure $4$

Represent the number of tiles with a table and an equation.
Hint (a):
Figure #
# of tiles
$1$
$2$
$2$
$7$
$3$
$4$
More Help (a):
If you are stuck, graph the points in your table.
What is the shape of your graph?
Answer (a):
$y=(x+1)^2-2=x^2+2x-1$
How many tiles are in Figure 5? Explain how you found your answer.
Hint (b):
Use the pattern in your table or the equation from part (a).