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OpenStudy (anonymous):
A geometric sequence is defined recursively by a_n = 4a_n-1. The 10th term of the sequence is a_10 = 3.5. What is a_13?
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OpenStudy (amistre64):
use a10 to find a11 use a11 to find a12 use a12 to find a13
OpenStudy (amistre64):
each next term is defined to be 4 times the previous term .....
OpenStudy (anonymous):
Oh, thanks.
OpenStudy (amistre64):
yep
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