The price of a new motorcycle is $9000 , but the value of the motorcycle drops by 13% each year.

Answer:
Domain:
t >= 0
Option D
Step-by-step explanation:
At year t = 0, (brand new motorcycle), the value in dollars is
v(0) = $9000
For each passing year, the motorcycle loses 13% of its original value.
This means that for t > = 0, the function produces a logical result.
The domain cannot be all real numbers because the years cannot be negative.
Answer is option D.