SOLUTION: I am stumped on this one too. I have been working it for hours but cannot seem to get the right formula to do it. Any help would be much appreciated. Thanks Write the nth term

Question 453310:
I am stumped on this one too. I have been working it for hours but cannot seem to get the right formula to do it. Any help would be much appreciated. Thanks
Write the nth term of the following sequence in terms of the first term of the sequence.
10, 20, 40, . . .
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
The nth term of a geometric sequence is given by . , and r = 2. Now substitute these values into the general formula.
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