Posted by anonymous on Wednesday, July 24, 2013 at 3:27pm.
the first number of a sequence is 200. every number of the sequence after the first is 100 less than twice the preceding number. what is the 5th number of the sequence

math  Reiny, Wednesday, July 24, 2013 at 5:23pm
t1 = 200
t2 = 2t1 100 = 2(200)  100 = 300
t3 = 2t2  100 = 2(300)  100 = 500
t4 = ...
..
t6 = 2t5  100 = ...
(you should get 3300)

math  Reiny, Wednesday, July 24, 2013 at 5:24pm
oops, went too far, only had to go to t5
how about 1700 ?
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