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Variables

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  If k = 16, what is the value of 1/4k + 4?

  
  

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  8

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  20

  
  
  

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  Which of these is equivalent to the expression, a(b + c), for real numbers a, b, and c?

  
  

  ab + c

  ab +ac

  b + ac

  a + b + a + c

  
  
  

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