advanced functions math

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You buy a car in 2005 for $7860 and it depreciates linearly. You sell the car for $5040 in 2011....

what does the domain represent in the function?
what does the range represent in this function?
what is the slope of the linear representation?
what is the function that models the linear representation?
using the model, make a prediction for what you could sell the car for today?

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