As cell phones proliferate, the number of pay phones continues to drop. The number of pay phones from 2004 through 2009 (in millions) are shown in the following table (x = 0 corresponds to 2004):

Year, x	0	1	2	3	4	5
Number of pay phones, y	1.30	1.15	1.00	0.84	0.69	0.56

a. Plot the number of pay phones (y) versus the year (x).

b. Draw the straight line L through the points (0,1.30) and (5, 0.56)

c. Derive an equation for the line L

d. Assuming that the trend contines, estimate the number of pay phones in 2012.