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1. A truck is purchased in 2009 can be modeled by v(t) = 52000(0.87) ^t , where t is the number of years since the car was purchased and v is in dollars. a) How much was the truck worth in 2009? b) What is the percentage rate of change? _____ c) Is that an annual increase or decrease? d) What will the truck be worth in 2020?