Question

Suppose that a phone that originally sold for $800 loses 3/5 of its value each year after it is released.

After 2 years, how much is the phone worth?




Write an equation for the value of the phone, , years after it is released.

Answer 1

It will be worth $128.

Explanation:

After 1 year, 3/5 of 800 is 480 which leaves the value at $320, and then after 2 years, 3/5 of 320 is 192. 320-192 leaves the value at $128.