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Data indicates that the percent change in beer shipments since the year 2007 for a beer company can be approximated by y = -3.4x + 23.8 where x = 7 corresponds to the year2007 Find the percent change since 2007 that occurred by 2009The percent change in beer shipments since 2007 that occurred by 2009 is %(Type an integer or decimal rounded to one decimal place as needed)

Respuesta :

y = -3.4x + 23.8

For x = 9 (what corresponds to the year 2009), we have:

y = -3.4*9 + 23.8 = -6.8

Therefore, since 2007, the precent change in beer shipments that occured by 2009 is -6.8%

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