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posted by  Anonymous on 7/16/2009 3:43:00 AM  |  status: Live  |  Earned Karma: 0

Problem set up

Course Textbook Chapter Problem Needs by
Algebra College Algebra (4th) by Blitzer 1.7 117E N/A
Question Details:
Need to figure out how to set up this application.
Not sure about why the numbers are placed where they are. Here is the application.
The percentage, P, of US voters who used electronic voting systems, such as optical scans, in national elections can be modeled by the formula
               P=3.1x+ 25.8
where x is the number of years after 1994. In which years will more than 63% of US voters use electronic systems?
Please help me figure out this problem.

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Oracle
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posted by Grace on 7/16/2009 5:54:50 AM  |  status: Live
Asker's Rating: Helpful   
Response Details:
given: P = 63

3.1x + 25.8 = 63
3.1x = 37.2
x = 12

Since x = number of years after 1994:
1994 + 12 = 2006

So after 2006, more than 63% of US voters will use electronic systems

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