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Read each question carefully, then choose the best answer.

• 1) What is the variable in 3y + 6?
  

  3
  y
  6
  3y
• 2) How many terms are in 3x + 6y - 10?
  

  0
  1
  2
  3
• 3) 9w + 10 is an example of
  

  an expression
  an equation
  an inequality
  none of the above
• 4) Simplify 10 - 6 / 2 * 3 + 1
  

  7
  2
  0
  10
• 5) Simplify 3x + 16 - x - 10
  

  9x
  3x + 6
  -3x + 6
  2x + 6
• 6) Simplify - 4(3x - 10)
  

  -12x + 40
  -12x - 40
  -12x - 10
  -7x - 14
• 7) Evaluate 3x^2 + 10 when x= - 3
  

  91
  37
  -17
  10
• 8) Evaluate 2x^3 + - 5y^2 when x= - 3 and y = 2
  

  34
  -34
  46
  -74
• 9) Solve 3x + 6 = 12
  

  2
  6
  -2
  3
• 10) Solve 5x^2 - 20 = 25
  

  9
  4.5
  3
  45
• 11) Solve 4(7x - 28) = 168
  

  0
  10
  7
  2
• 12) Solve 3x + 4 = - 2x - 11
  

  -3
  -7
  -15
  3