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April 24, 2014

April 24, 2014

Posted by **Brianna** on Sunday, November 13, 2011 at 8:21pm.

- ---college algebra (average rate of change)--- -
**Steve**, Monday, November 14, 2011 at 12:00pmfrom 1 to 9, g(x) = 20(x-1)

so, g(9) = g(1) + 160

similarly, g(21) = g(9) + 40(21-9)

= g(9) + 480

So, g(21) = g(1) + 160 + 480 = g(1)+640

640/(21-1) = 640/20 = 32

The average rate of change from x=1 to 21 is 32.

- ---college algebra (average rate of change)--- -
**Anonymous**, Monday, November 14, 2011 at 4:19pmsolve using the graphing method y=x-3

y=-1/2x=3

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