SOLUTION: A company paid ​$150,000 for a new​ 18-wheeler. When it is 9 years old it will be worth ​$42,000. Using​ straight-line depreciation, the value of the truck

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Question 1119117: A company paid ​$150,000 for a new​ 18-wheeler. When it is 9 years old it will be worth ​$42,000. Using​ straight-line depreciation, the value of the truck in​ dollars, V, is a linear function of its age in​ years, n. Find the function and the value when the truck is 4 years old.
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
Points (t, V)
(0, 150000) and (9, 42000)


Starting with slope-intercept form,
V=%28%2842000-150000%29%2F%289%29%29t%2B150000
Simply and then find V when t=4.