Gross Domestic Product The U.S. gross domesticproduct (GDP), in trillions of dollars, for selectedyears from 2005 and projected to 2070 can be modeled byy = 0.00188x3 - 0.0954x2 + 2.79x - 2.70,with x equal to the number of years after 2000. Inwhat year does the model indicate the GDP will be$85.48 trillion?

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