The percentage of adults in the United States who use the Internet has increased substantially from the year 2000 to the year 2021. Figure 14 shows the percentage of U.S. adults who used the Internet during 6 of the years in that time period and the least-squares line for the data, where x represents the number of years after 2000.

Figure 14

(a) Obtain the least-squares line that fits the data. 

(b) Use the equation to determine the percentage of U.S. adults using the Internet in 2018.

(c) According to the least-squares line, in what year did approximately 80% of U.S. adults use the Internet?

Transcribed Image Text:

Percent Percentage of U.S. Adults Who Use the Internet 120 100 80 60 40 20 0 52 68 5 сл 76 86 10 15 Years after 2000 93 20 25