In the United States, the percent of adult blogging
Chapter 4, Problem 4.3.15(choose chapter or problem)
In the United States, the percent of adult blogging haschanged within the various age ranges. From 2007 to 2009,the function y = -4.5x + 24 can be used to estimate thepercent of adults under 30 who blogged, and the functiony = 2x + 7 can be used to estimate the percent of adultsover 30 who blogged. For both functions, x is the numberof years after 2007. (Source: Pew Internet & American LifeProject)a. If this trend continues, predict the year in which the percentof adults under 30 and the percent of adults over30 who blog was the same.b. Use these equations to predict the percent of adults under 30 who blog and the percent of adults over 30 whoblog for the current year.
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