SOLUTION: what is the nth term for 31 51 71 91

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Question 816779: what is the nth term for 31 51 71 91
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Sequence 31, 51, 71, 91 ...

Arithmetic Sequence d = 20

a%5Bn%5D=a%5B1%5D%2B%28n-1%29%2Ad

a%5Bn%5D=++31+%2B%28n-1%29%2A20 ***



CHECKING ***

a%5B4%5D=++31+%2B%283%29%2A20+=+91