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