Sangeetha Pulapaka

  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.