Find nth term in doubling sequence

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How to write down the nth term of a geometric sequence: 5, 10, 20, 40, ... SUBTITLES available.

0:00 Geometric sequence
0:10 nth term example
2:26 Check formula
2:47 Predict 10th term
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Hey jay really love like LOVE your vids it's really easy to understand when you teach me

ChampsFC
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Hey Jay what kinds of software do you use for note taking?

zardox
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I feel stupid. I forgot this concept and I've been playing a game and trying to calculate what resources I need and the whole game revolves around 2^n. For some reason I was using percentages and I knew that was wrong and I couldn't remember how to express this. Years out of highschool and you forget some real basic algebra.

ninjascout