Posted by **Help!!** on Wednesday, July 24, 2013 at 3:51pm.

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 -
**Ms. Sue**, Wednesday, July 24, 2013 at 3:53pm
I'll get you started.

200, 300, 500

Take it from there.

- MATH -
**Help!!**, Wednesday, July 24, 2013 at 3:59pm
how is it 200, 300 when it says it is 100 less than twice the preceding number... isnt it 200-100=100x2==200 again? im confused

- MATH -
**Graham**, Wednesday, July 24, 2013 at 4:38pm
100 less than _twice_ the preceeding number.

(200)*2 -100 = 300

(300)*2 -100 = 500

(500)*2 -100 = ... et cetera

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