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

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.

the answer is C. 28.