Question: A smartphone currently is worth $175 and depreciates at 25% per year. What will the value be in 3 years?
What equation do I use to solve this?

Question

Question: A smartphone currently is worth $175 and depreciates at 25% per year. What will the value be in 3 years? 
What equation do I use to solve this?

anonymous · Answer

loses 25% of its value means it retains 75% of its value
use $175\times .75^t$

anonymous · Answer

eqquation close to p=(1+r/100)^n
n=number of years
compound interest

anonymous · Answer

or if you prefer $175\times (\frac{3}{4})^t$ either way 
you want $175\times (.75)^3$ and a calculator is needed for this one

anonymous · Answer

well done satellite

anonymous · Answer

Thanks guys.(: