SOLUTION: The first term of an infinite geometric sequence is 4. The sum of the infinite sequence is 200. A) Find the sum of the first 8 terms b) Find the least value for n which Sn

Question 1185339: The first term of an infinite geometric sequence is 4. The sum of the infinite
sequence is 200.
A) Find the sum of the first 8 terms
b) Find the least value for n which Sn > 163.
Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!
A) Find the sum of the first 8 terms







Divide both sides by 4

b) Find the least value for n which Sn > 163.
















Take natural logs of both side:









The least integer than n can take on greater 
than that is 84.

Edwin

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