Added: 5 months ago
From: khanacademy
Views: 1,973
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  • ahh, good times from may 2011 lol, i remember this question too

  • We (our class) struggled with this so much with this 2 years ago!!!! Thanks for sharing!!!

  • Sal - I'm so glad you're adding to your calculus and maths videos.

  • Can't wait till he gets to the one about the land fill, that problem gave me nightmares.

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