1.	How many blocks are used in Stages 1–3?
		A.	9, 15, 21	B.	3, 6, 10
		C.	3, 7, 10	D.	4, 7, 10
		Hint
	2.	Find an expression for the number of blocks in Stage s.
		A.	3s + 1	B.	2s – 1
		C.	s + 3	D.	3s
		Hint
	3.	Draw a top-count view of this block
		A.		B.
		C.		D.
		Hint
	4.	Without building it, predict the number of blocks in Stage 7.
		A.	100	B.	64
		C.	49	D.	81
		Hint
	5.	Describe this pattern.
		A.	doubling pattern	B.	square pattern
		C.	cube pattern	D.	''add 1'' pattern
		Hint