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The quadratic regression relating alcohol content in the blood f(x) (measured in mg/L) vs time after consumption a
(measured in hours) is given by
f(x)=-46.479x² + 116.94x+8.3393.
Use the quadratic regression to estimate the alcohol content after 2 hours and 15 minutes if no additional alcohol is
consumed. Round your answer to one decimal place. Do not include units in your answer.