SOLUTION: how to write a formula for the general term of the geometric sequence? Then use to find a7. 1.6 , -3.2 , 6.4 , -12.8 ...

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Question 930478: how to write a formula for the general term of the geometric sequence? Then use to find a7.
1.6 , -3.2 , 6.4 , -12.8 ...
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
1.6 , -3.2 , 6.4 , -12.8 ...
an = 1.6(-2)^(n-1)