1.	Simplify 3 + 2(xy+ 3z) + 4xy.
		A.	6xy + 6z + 3	B.	9xy + 15z
		C.	6xy + 3z + 3	D.	5xy + 3z + 3
		Hint
	2.	Simplify 12f + 6(3 + 4f).
		A.	54f	B.	34f
		C.	36f + 18	D.	16f + 18
		Hint
	3.	Evaluate 0.75 + 2.2 + 0.25 + 0.8.
		A.	3	B.	5
		C.	6	D.	4
		Hint
	4.	Write a simplified expression to represent 5 times the sum of x and 3 increased by 10.
		A.	5x + 13	B.	35x
		C.	18x	D.	5x + 25
		Hint
	5.	Simplify 2x + 5x + 4(x + 3).
		A.	11x + 3	B.	14x
		C.	23x	D.	11x + 12
		Hint