SOLUTION: S=3x^2-21x+105 models spending by travelers to a country, in billions of dollars, x years after 2000. what year did travelers spend $75 billion.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equation Customizable Word Problems -> SOLUTION: S=3x^2-21x+105 models spending by travelers to a country, in billions of dollars, x years after 2000. what year did travelers spend $75 billion.      Log On


   

Question 601522: S=3x^2-21x+105 models spending by travelers to a country, in billions of dollars, x years after 2000. what year did travelers spend $75 billion.
Answer by flame8855(424) About Me  (Show Source):
You can put this solution on YOUR website!
S = 75
3x^2-21x+105=75
3x^2-21x+30 =0
x=2, x= 5
2002 or 2005