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December 5, 2016
Posted by **selina ** on Wednesday, December 26, 2012 at 6:03pm.

- college math -
**drwls**, Wednesday, December 26, 2012 at 6:19pmThe rate of change is the derivative,

f'(x) = 3x^2 + 3.

Between x = 1 and 2, it increases from 6 to 15 - collage math -
**Writeacher**, Wednesday, December 26, 2012 at 6:39pmhttp://www.answers.com/college

http://www.answers.com/collage

http://www.shapecollage.com/

Interesting!