SOLUTION: The 12th term of an arithmetic sequence is 35. The 7th term is four times the 2nd term. Find the nth term of the sequence?

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Question 841586: The 12th term of an arithmetic sequence is 35. The 7th term is four times the 2nd term. Find the nth term of the sequence?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
a+12d=35,
a+7d=4*(a+2d)
a=-1 d=3
-1+36=35
-1+7*3=20
4*(-1+2*3)
4*5=20
t=-1+3*n