Question

a car depreciates by 17% each year. the value of a $30000 over time is modelled by the function v=30000(0.83)t, where v is the value of the car and t is the time, in years. How many years will it take for the car to be worth half its original value?
0.83^t = 1/2
t = log0.5/log0.83 = 3.72 years

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