a vehicle was purchased for $40 000 dollars in 2012 this book value. This book vaule of the vehicle can be modelled by the exponential function V(t)=...

a vehicle was purchased for $40 000 dollars in 2012 this book value. This book vaule of the vehicle can be modelled by the exponential function V(t)= 40000(0.85)^t  where V(t) represents the book vaule in dollars and t represents time in year since purchase date 

a.10

b.11

c.9

d.12