1.	Simplify 6a + 15a.
		A.	21a	B.	6a + 15a
		C.	42a	D.	21a2
		Hint
	2.	Name the set of numbers that is graphed below.
		A.	{all integers}	B.	{-3, 2, 4}
		C.	{-6, -3, 2, 4}	D.	{-6, -3, 0, 2, 4}
		Hint
	3.	Find the mode of {325, 100, 115, 621, 325, 325, 100}.
		A.	273	B.	100
		C.	325	D.	115
		Hint
	4.	You have scores of 62, 75, and 90 on three of your history exams. What do you need to get on your fourth exam for a mean of 80?
		A.	93	B.	97
		C.	100	D.	80
		Hint
	5.	What is implied when it is said that x and y have a negative correlation?
		A.	When the value of x increases, the value of y decreases.
		B.	When the value of x is negative, the value of y negative.
		C.	When the value of x increases, the value of y does not necessarily increase or decrease.
		D.	When the value of x increases, the value of y increases.
		Hint
	6.	Simplify (3a4b5c)4.
		A.	3a16b20c4	B.	12a8b9c5
		C.	81a16b20c4	D.	7a16b20c4
		Hint
	7.	Simplify . Assume the denominator is not equal to zero.
		A.		B.
		C.		D.
		Hint
	8.	Write an algebraic expression for the verbal expression. the sum of 4 and one half of the number x
		A.	4 - x	B.	4 + x
		C.	4 + ÷ x	D.	4 - ÷ x
		Hint
	9.	Evaluate 12 - |x - 7| if x = 15.
		A.	7	B.	4
		C.	6	D.	9
		Hint
	10.	Which scatter plot shows that x and y have a positive correlation?
		A.		B.
		C.		D.
		Hint
	11.	Steve needed to find out which classes people liked the most. Therefore, after he arrived at his math club meeting, he asked some people there. What kind of sample is this?
		A.	biased, voluntary	B.	unbiased, random stratified sample
		C.	unbiased, random sample	D.	biased, convenience
		Hint
	12.	What are the dimensions of the matrix?
		A.	2 × 3	B.	4 × 2
		C.	6	D.	3 × 2
		Hint
	13.	Find B – A.
		A.		B.	impossible
		C.		D.
		Hint
	14.	Using the box-and-whisker plot, what is the first quartile of Exam B?
		A.	83	B.	75
		C.	63	D.	72
		Hint
	15.	What appears to happen in the graph?
		A.	Production dropped in half each month.	B.	Production has decreased slightly.
		C.	Production has doubled each month.	D.	Production increased each month.
		Hint
	16.	Why is the graph misleading?
		A.	Color is misleading.	B.	Months are out of order.
		C.	Bars appear to have cut in half.	D.	Scale is not at even intervals.
		Hint
	17.	What is B – C?
		A.		B.
		C.		D.
		Hint
	18.	Simplify m – 4n + 8m.
		A.	–4n – 4m	B.	5m
		C.	9m – 4n	D.	–4m – 4n
		Hint
	19.	Simplify –3m(–4n + 8)
		A.	–12mn – 24m	B.	12mn – 24m
		C.	–12mn – 24	D.	12mn – 8
		Hint
	20.	What are the next three terms if the first term is 6 and the pattern is add 2, subtract 3?
		A.	9, 7, 10	B.	8, 5, 7
		C.	4, 7, 3	D.	6, 8, 5
		Hint