Pathway to Introductory Statistics 1st Edition By Lehmann – Test Bank

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Use the indicated property to provide a new expression equal to the given expression.
1) 7 + x; commutative law for addition
A) x – 7 B) 7 – x C) x + 7 D) -x – 7
1)
2) -9x; commutative law for multiplication
A) x – 9 B) 9x C) x(9) D) x(-9)
2)
3) (6x + 7) + 4; associative law
A) (6x + 7 + 4) B) (7 + 6x) + 4 C) 6x + (7 + 4) D) 6x + 7 + 4
3)
4) 8x + 8; commutative law for multiplication
A) x(8) + 8 B) 8 + x(8) C) 8 + 8x D) 8x + 8
4)
5) 2x + 1; commutative law for addition
A) 1 + x(2) B) 1x + 2 C) 1 + 2x D) x(2) + 1
5)
6) (4 ∙ 4) ∙ 3; associative law
A) (4 ∙ 4) ∙ 3 B) 3 ∙ (4 ∙ 4) C) (4 ∙ 4 ∙ 3) D) 4 ∙ (4 ∙ 3)
6)
Simplify.
7) 4(-8x)
A) 32x B) -22x C) -64x D) -32x
7)
8) 10 + (x – 5)
A) x – 5 B) x – 15 C) x + 15 D) x + 5
8)
9) 1
5
(40a)
A) 5a B) 8a C) 40a D) 200a
9)
10) 5 x
30
A) x
5 B) 150x C) x
6 D) 6x