SOLUTION: the fourth term in an arithmetic sequence is 18 and the 9th term is 43. write the sequence.

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Question 852085: the fourth term in an arithmetic sequence is 18 and the 9th term is 43. write the sequence.
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
An = a1 + (n - 1)d
18 = a + 3d,
43 = a + 8d
a = 3, d = 5
3,8,13,18,23,28,33,38,43
An = 3 + 5(n - 1)