SOLUTION: what is the equation for the sequence 31,26,21,16,11,...

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Question 745670: what is the equation for the sequence 31,26,21,16,11,...
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
31,26,21,16,11,...
tells us:
d=31-26=26-21=21-16=16-11=5

a1=31
therefore:
%0D%0Aa%5Bn%5D=a%5B1%5D%2B%28n-1%29d%0D%0A

becomes

%0D%0Aa%5Bn%5D=31%2B5%28n-1%29%0D%0A

:)