SOLUTION: A geometric sequence has a1=36 and r=0.5. What is the 15th term of the sequence

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Question 1033842: A geometric sequence has a1=36 and r=0.5. What is the 15th term of the sequence

Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
We use
a%5Bn%5D+=+a%5B1%5D%2Ar%5E%28n-1%29
so that
a%5B15%5D+=+36%2A%28.5%29%5E14+=+.002197 (about)