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