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An investment manager uses the following formula to predict the value, V, of his investment in dollars, n years after he purchases a new technology stock. 

V=68,000+1200(n-3)

Based on this formula, how many years will it take for the investment to best be worth $73,400?

 Feb 28, 2021
 #1
avatar+34315 
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(73400- 68000) / 1200    + 3   =   n

 Feb 28, 2021
 #2
avatar+564 
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V=73400=68000+1200(n-3)

5400=1200(n-3)=1200(9/2)

so n=3+9/2=$\boxed{15/2 \  years}$ 

 Feb 28, 2021

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