1. 

   math_celebrity Administrator Staff Member

   5 times a number increased by 13
   
   A number is denoted as an arbitrary variable, let's call it x
   x
   
   5 times that number
   5x
   
   Increased by 13 means we add
   5x + 13

    

   math_celebrity, Nov 5, 2016

   #1
   
   

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