SOLUTION: The function S(t)=139.2-5.1t can be used to estimae the total Cuban sales of windshield wiper fluid, in thousands of dollars, t years after 1990. Predict the total Cuban sales of

Question 142226: The function S(t)=139.2-5.1t can be used to estimae the total Cuban sales of windshield wiper fluid, in thousands of dollars, t years after 1990. Predict the total Cuban sales of windshield wiper fluid in 2010.
This problem showed up on a quiz, and still don't know the answer. Please help.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The function S(t)=139.2-5.1t can be used to estimae the total Cuban sales of windshield wiper fluid, in thousands of dollars, t years after 1990. Predict the total Cuban sales of windshield wiper fluid in 2010.
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2010 is 20 years after 1990.
S(20) = 139.2 - 5.1(20)
S(20) = 139.2 - 102
S(20) = 37.2
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Cheers,
Stan H.
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