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Mathematics 20 Online
OpenStudy (anonymous):

the polynomial 0.0014x^3-0.08x^2+1.7x+11 models natural gas consumption in trillions of cubic feet. x=0 corresponds to 1960, x=1 1961. In which year between 1970 and 1990 was natural gas consumption about 24.2 trillion in cubic feet??

OpenStudy (anonymous):

so 0.0014x^3-0.08x^2+1.7x+11=24.2 x=20 Year 1980

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