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Systems of Equations

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  Conner purchased 3 soft drinks at a convenience store. Before tax was added, the total cost of the 3 drinks was equal to the cost of 1 drink plus $2. Which of these equations could be used to determine c, the cost of 1 soft drink?

  
  

  c + 3 = c + 2

  c - 3 = c + 2

  3c = c + 2

  c/3 = c + 2

  
  
  

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