The price of computers has been dropping for the past ten years. If a desktop PC cost $5,700 ten years ago, and the same computing power cost $410 two years ago, find the rate of decrease per year. (Assume a straight-line model.)
A) $685.25
B) $661.25
C) $611.25
D) $651.25
E) $765.25

Question

Quizplus · Accepted Answer

The total decrease in price over 8 years (from $5,700 to $410) is $5,290. Dividing this by 8 gives a yearly decrease of $661.25.

The Price of Computers Has Been Dropping for the Past