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Ch. 6 Expressions Pretest
  • 1. In the expression x + y + 5, what is/are the variable(s)?
A) I don't know
B) x and y
C) y
D) 5
E) x
  • 2. In the expression 2z + 3z + 4, what is/are the variable(s)
A) I don't know
B) z and 4
C) 2
D) 2z
E) z
  • 3. Which expression has two different variables?
A) I don't know
B) 6a + 3a
C) 2y - 9
D) 2x + 3y
E) 9x+3x-12
  • 4. What is the value of the expression 25•(5-1)÷4-12
A) 14
B) 19
C) 18
D) I don't know
E) 13
  • 5. What is the value of the expression 7+9•(3+8)
A) I don't know
B) 42
C) 176
D) 106
E) 56
  • 6. Evaluate the expression if e = 1/3: 9e2
A) I don't know
B) 3
C) 6
D) 1
E) 14
  • 7. Factor the expression 35x + 63y
A) 44xy
B) I don't know
C) 98xy
D) 7(5x + 9y)
E) 5(7x)+9y
  • 8. Simplify the expression x + 4x + x
A) 4x + 2x
B) 4(3x)
C) 6x
D) I don't know
E) 4+3x
  • 9. Simplify the expression (3•x) • 11
A) 33x
B) x=33
C) 3x•11
D) I don't know
E) 33+x
  • 10. What property is used in this expression: 15+(5+8) and (15 + 5) + 8
A) Identity Property
B) Distributive Property
C) Associative Property
D) I don't know
E) Commutative Property
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