Answers edited by e52fa787

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• Question #e4fb1
  
• What happens when limestone comes in contact with an acid? Why?
  
• How do you find the sum of the finite geometric sequence of #Sigma (5/2)^(n-1)# from n=1 to 10?
  
• How do you solve #x-3y=-9# and #x+3y=3# by graphing?