SOLUTION: find the first 6 terms and the 300th term of the arithmetic sequence 13,7...

Question 511043: find the first 6 terms and the 300th term of the arithmetic sequence 13,7...
Answer by htmentor(1343) (Show Source): You can put this solution on YOUR website!
find the first 6 terms and the 300th term of the arithmetic sequence 13,7...
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The n-th term of an arithmetic sequence is
a_n = a_1 + (n-1)d
where a_1 = the 1st term, d = the common difference
In this case d = 7 - 13 = -6
a_1 = 13
So a_n = 13 - 6(n-1) -> a_n = 19 - 6n
a_300 = 19 - 6*300 = -1781
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