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