Data regarging the value of a particular laptop is represented in the graph I will make It takes half as long for the value of a particular color

Data regarging the value of a particular laptop is represented in the graph I will make It takes half as long for the value of a particular color printer of the same purchase price to be the same value as the laptop answer the fllowing...1.At what rate is the value of the laptop changing? 2. at what rate is the value of the color printer changing. 3. what is the value of the color printer after 2 years