Cost of Public Colleges The average cost, in dollars, for tuition and fees for in-state students at four-year public colleges over the period 2000–2010 can be modeled by the equation y = 3.026x2 + 377.7x + 3449,
where x = 0 corresponds to 2000, x = 1 corresponds to 2001, and so on. Based on this model, for what year after 2000 was the average cost $7605? (Source: The College Board, Annual Survey of Colleges.)
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