Math
posted by Emily .
A man was given $x. He spent 50 cents a day. How much money had he left after
A) 10 days?
B) 2 weeks?
C) t days?

1st term = x
2nd term = x.5
3rd term = x  2(.5)
....
10th term = x  9(.5) = x  .45
...
14th term = x  13(.5) = x  6.5
t th term = x  (t1)(.5)
I assume you are studying sequences and series.
Do you recognize the arithmetic sequence pattern ?