Keiko always takes her water bottle with her when she hikes, and she always
drinks half a liter of water for every mile she hikes. Yesterday, she hiked a mile.
What fraction of a liter of water did she drink?
Expression:
Keiko drank_
of a liter of water.

What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio