Which represent geometric sequences?
A marathon runner runs half of a race,
then runs half the distance left to the finish
line, then runs half the distance that still
remains, and so on.
The first movie rental costs $2, and each
additional rental costs $1.
10, 1, 0.1, 0.01, ...
34(0:2)k-1
4, 20, -100, 500, ...
-1,5, 11, 17, 23, ...
DONE
11) Intro