1.	How many blocks are used in Stages 1–3?
		A.	9, 15, 21	B.	3, 7, 10
		C.	3, 6, 10	D.	4, 7, 10
		Hint
	2.	Find an expression for the number of blocks in Stage s.
		A.	2s – 1	B.	3s + 1
		C.	3s	D.	s + 3
		Hint
	3.	Draw a top-count view of this block
		A.		B.
		C.		D.
		Hint
	4.	Create a block pattern with s2 – 1 blocks.
		A.		B.
		C.		D.
		Hint
	5.	Describe this pattern.
		A.	square pattern	B.	cube pattern
		C.	''add 1'' pattern	D.	doubling pattern
		Hint