1.	How many blocks are used in Stages 1–3?
		A.	3, 6, 10	B.	9, 15, 21
		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.	3s
		C.	s + 3	D.	2s – 1
		Hint
	3.	Find the top-count view of Stages 3 and 4 for the block pattern below.
		A.
		B.
		C.
		D.
		Hint
	4.	Without building it, predict the number of blocks in Stage 7.
		A.	49	B.	100
		C.	81	D.	64
		Hint
	5.	Create a block pattern with s2 – 1 blocks.
		A.		B.
		C.		D.
		Hint