The table at right shows the number of cellular telephone subscribers in the United States from 1985 to 2000.

a. Create a scatter plot of the data.
b. Find an exponential function to model the data.
c. Use your model to predict the number of subscribers in 2003. Do you think this is a realistic prediction? Why or why not? Do you think an exponential model is appropriate? Why or why not?

Transcribed Image Text:

Cellular Phone Subscribers ear Number of Number of Subscribers Year Subscribers 1985 340,000 1993 16,009,000 24,134,000 1986 682,0001994 1,231,000 1995 1987 1988 1989 1990 33,786,000 2,069,000 996 44,043,000 55312.000 3,509,000 1997 283,000 998 69,209,000 7,557,000999 86,047,000 1992 11,033,000 2000 109,478,000 1991