1.	Find the solution of 72 + z = 84 if the value of z can be selected from the set {4, 8, 12, 16}.
		A.	12	B.	16
		C.	8	D.	4
		Hint
	2.	Solve 3x = 18.
		A.	15	B.	6
		C.	7	D.	21
		Hint
	3.	Which value for b makes the inequality true?
		A.	6	B.	none of these
		C.	7	D.	5
		Hint
	4.	Solve n – 2 = 5.
		A.	7	B.	3
		C.	–3	D.	–7
		Hint
	5.	The number sentence below is false. Make the sentence true by changing one symbol or number. Find the correct number sentence. 52 – 21 = 5 × 4 + 8
		A.	52 – 21 < 5 × 4 + 8
		B.	62 – 21 = 5 × 4 + 8
		C.	52 – 21 > 5 × 4 + 8
		D.	52 – 21 = 5 × 5 + 8
		Hint