The number of new users y​ (in millions) for a certain website between August 2008 and May 2009 can be modeled by the equation y=ax2+bx+​c, where x represents the age of the user. Using the ordered pair solutions ​(15​,1​), ​(35​,8​),and ​(55​,5​), create a system of linear equations in three variables for​ a, b, and c. Do this by substituting each ordered pair solution into the​ model, creating an equation in three variables. Solve the resulting system to find the coefficient

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