example 6 Internet Use

Chapter 4.4

According to Internet World Stats, the number of worldwide Internet users, in millions, during the years 1995 to 2007 can be modeled by the equation

where x is the number of years after 1990. For what years from 1995 through 2015 does this model indicate that the number of worldwide Internet users is at least 1103 million?

23.604 27.626 261.714y x x

2009 PBLPathways

2009 PBLPathways

According to Internet World Stats, the number of worldwide Internet users, in millions, during the years 1995 to 2007 can be modeled by the equation

where x is the number of years after 1990. For what years from 1995 through 2015 does this model indicate that the number of worldwide Internet users is at least 1103 million?

23.604 27.626 261.714y x x

2009 PBLPathways

According to Internet World Stats, the number of worldwide Internet users, in millions, during the years 1995 to 2007 can be modeled by the equation

where x is the number of years after 1990. For what years from 1995 through 2015 does this model indicate that the number of worldwide Internet users is at least 1103 million?

23.604 27.626 261.714y x x

x

y 23.604 27.626 261.714y x x

2009 PBLPathways

According to Internet World Stats, the number of worldwide Internet users, in millions, during the years 1995 to 2007 can be modeled by the equation

where x is the number of years after 1990. For what years from 1995 through 2015 does this model indicate that the number of worldwide Internet users is at least 1103 million?

23.604 27.626 261.714y x x

x

y 23.604 27.626 261.714y x x

2009 PBLPathways

According to Internet World Stats, the number of worldwide Internet users, in millions, during the years 1995 to 2007 can be modeled by the equation

where x is the number of years after 1990. For what years from 1995 through 2015 does this model indicate that the number of worldwide Internet users is at least 1103 million?

23.604 27.626 261.714y x x

x

y 23.604 27.626 261.714y x x 23.604 27.626 261.714 1103x x

2009 PBLPathways

According to Internet World Stats, the number of worldwide Internet users, in millions, during the years 1995 to 2007 can be modeled by the equation

where x is the number of years after 1990. For what years from 1995 through 2015 does this model indicate that the number of worldwide Internet users is at least 1103 million?

23.604 27.626 261.714y x x

x

y 23.604 27.626 261.714y x x 23.604 27.626 261. 1103714x x

2009 PBLPathways

According to Internet World Stats, the number of worldwide Internet users, in millions, during the years 1995 to 2007 can be modeled by the equation

where x is the number of years after 1990. For what years from 1995 through 2015 does this model indicate that the number of worldwide Internet users is at least 1103 million?

23.604 27.626 261.714y x x

x

y 23.604 27.626 261.714y x x

1103y

23.604 27.626 261. 1103714x x

2009 PBLPathways

According to Internet World Stats, the number of worldwide Internet users, in millions, during the years 1995 to 2007 can be modeled by the equation

where x is the number of years after 1990. For what years from 1995 through 2015 does this model indicate that the number of worldwide Internet users is at least 1103 million?

23.604 27.626 261.714y x x

x

y 23.604 27.626 261.714y x x

1103y

(16, 1103)

23.604 27.626 261. 1103714x x

2009 PBLPathways

According to Internet World Stats, the number of worldwide Internet users, in millions, during the years 1995 to 2007 can be modeled by the equation

where x is the number of years after 1990. For what years from 1995 through 2015 does this model indicate that the number of worldwide Internet users is at least 1103 million?

23.604 27.626 261.714y x x

x

y 23.604 27.626 261.714y x x

1103y

(16, 1103)

23.604 27.626 261. 1103714x x

[ ]

2009 PBLPathways

According to Internet World Stats, the number of worldwide Internet users, in millions, during the years 1995 to 2007 can be modeled by the equation

where x is the number of years after 1990. For what years from 1995 through 2015 does this model indicate that the number of worldwide Internet users is at least 1103 million?

23.604 27.626 261.714y x x

x

y 23.604 27.626 261.714y x x

1103y

(16, 1103)

23.604 27.626 261. 1103714x x

[ ]

[16,25] 16 25x or