Answers created by Bugatti S.

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• How do you graph #y=x^2+4x-3#?
  
• How many cup of juice must be added to 30 cup of punch that is 8% grapefruit juice, to obtain a punch that is 10% grapefruit?
  
• Expand the expression 2(r-4)+5(r+2). Express your answer in simplest form?
  
• Sam's coach is twice as old as Sam. When Sam started soccer 10 years ago, his coach was four times his age. How old is Sam now?
  
• If 5 is added to a number and the sum is tripled, the result is 27 more than than number? Find the number
  
• What charge on a carbonate ion [co32-]? compared to the number of protons how many electrons does the carbonate ion have