1. 

   math_celebrity Administrator Staff Member

   19 increased by twice Vanessa's age
   
   Let Vanessa's age be a.
   
   Twice means we multiply a by 2:
   2a
   
   The phrase increased by means we add 2a to 19:
   19 + 2a

    

   math_celebrity, Dec 11, 2020

   #1
   
   

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