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