SOLUTION: From 1990 to 1993, the number of truck registrations (in millions) in the united states can be approximated by the model R=0.29t^2+45 where t is the number of years since 1990. Du

Question 125465: From 1990 to 1993, the number of truck registrations (in millions) in the united states can be approximated by the model R=0.29t^2+45 where t is the number of years since 1990. During which year were approximately 46.16 million trucks registered.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
From 1990 to 1993, the number of truck registrations (in millions) in the united states can be approximated by the model R=0.29t^2+45 where t is the number of years since 1990. During which year were approximately 46.16 million trucks registered.
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46.16 = 0.29t^2+45
0.29t^2 = 1.16
t^2 = 4
Positive solution:
t = 2 years.
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Cheers,
Stan H.
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