SOLUTION: The value v of a shopkeeper's inventory software program is given by v=-1/3t+3, where t is the number of years since the shopkeeper brought the program, what is the program worth 9

Algebra ->  Linear-equations -> SOLUTION: The value v of a shopkeeper's inventory software program is given by v=-1/3t+3, where t is the number of years since the shopkeeper brought the program, what is the program worth 9      Log On


   

Question 389689: The value v of a shopkeeper's inventory software program is given by v=-1/3t+3, where t is the number of years since the shopkeeper brought the program, what is the program worth 9 years after it is first purchased? Plot the point with the t value 9.
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Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Assuming that the equation is v=-%281%2F3%29t%2B3



v=-%281%2F3%29t%2B3 Start with the given equation.


v=-%281%2F3%29%289%29%2B3 Plug in t=9 (since we want to know the value 'v' when it's t=9 years)


v=-9%2F3%2B3 Multiply -1%2F3 and 9 to get -9%2F3


v=-3%2B3 Reduce


v=0 Combine like terms.


So the program's worth after 9 years is $0. In other words, the program is worthless after 9 years (so this the point of no return)


So when t=9, v=0 giving us the point (9,0)


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