The graph shows the number of U.S. radio stations on the air, along with the graph of a linear function that models the data.

U.S. Radio Stations

(a) An equation for a linear model, based on data from 1950–2014 (where x = 0 represents 1950, x = 10 represents 1960, and so on) is y = 200.02x + 2727.7. Determine the slope. What does the slope of this line represent? Why is the slope positive?

(b) Use the model in part (a) to predict the number of stations in 2018.

Transcribed Image Text:

16,000 14,000 12,000 ........F.......F.. 10,000 8000 6000 .....---.... 4000 2000 1960 1970 1980 1950 1990 2000 2010 2020 Year Number of Stations