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September 19, 2014

September 19, 2014

Posted by **Melissa** on Tuesday, January 3, 2012 at 6:12pm.

- math -
**Reiny**, Tuesday, January 3, 2012 at 7:17pmlooks like d = 13

what term = 100?

7 + 13(n-1) = 100

13n - 13 = 93

13n = 106

n = 106/13 = 8.1

in 8 weeks the tree will be slightly short of the 100

( term(8) = a+7d = 7 + 91 = 98 )

So it will be more than 100 mm tall in the 9th week

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