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January 30, 2015

January 30, 2015

Posted by **Piwo** on Thursday, April 12, 2012 at 9:21am.

Could you please help me find the third term of the new sequence.

Thank you.

- Math -
**Steve**, Thursday, April 12, 2012 at 11:31amAS: a+2n

GS: b*2^(n-1)

a+b = 1

a+2 + 2b = 7

a + b = 1

a + 2b = 5

b = 4

a = -3

-3 + 2n: -3 -1 1 3 5

4*2^(n-1): 4 8 16 32 64

sum: 1 7 17 35 69

Looks like 17

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