D

A Phone, A CThis graph represents one of the following descriptions. Which one? a. A phone loses  of its value every year after purchase: the relationship​ between​ ​the​ ​number​ ​of​ ​years​ ​since purchasing​ ​the​ ​phone​ ​and​ ​the​ ​value​ ​of​ ​the​ ​phone. b. The number of stores a company has triples approximately every 5 years: the relationship ​between​ ​the number of years and the​ ​number​ ​of​ ​stores​.ompany, A Camera
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Sangeetha Pulapaka
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  1. The graph represents option C.
  2. What we have is an exponential decay function. From the graph, we see that the points are 1200, 710, 440, ... Option c says that it loses \frac{2}{5} every year. This means that the decay factor is 1 - \frac{2}{5} = \frac{3}{5} = 0.6. The common decay factor represented by the points on the graph is also almost 0.6. So the graph represents the description in option C.