If you can give me more info, I can solve this for you, please write out the complete problem.
B stands for Area of the base in the volume formula
Answer:
A) the value of the car will be 13,333.34 after 3 years ( not sure )
B) the depreciation of the car will be 2222.22 per year ( not sure)
C) i do not know
15/40 x 100 = 37.5
equation for percent decrease is diiference/original x 100.
