CPM Homework Help : CCA Problem 10-71

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 a rule.
Hint (a):
See problem 9-40.
More Help (a):
You can use your table to write the rule.
If you are stuck, graph the points in your table.
What is the shape of your graph?
Answer (a):
Using the tile pattern similar to problem 9-40:
$y=x+(x−1)(x+1)+x$
Using the table: $y=(x+1)^2−2=x^2+2x−1$
Find the number of tiles in Figure 5. Explain how you found your answer.
Hint (b):
Use the pattern in your table or the equation from part (a).