SOLUTION: The 15th and 21st terms of an arithmetic sequence are -67 and -97, respectively. What is the 30th term?

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Question 930946: The 15th and 21st terms of an arithmetic sequence are -67 and -97, respectively. What is the 30th term?

Found 2 solutions by jamiya, MathTherapy:
Answer by jamiya(9)   (Show Source): You can put this solution on YOUR website!
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Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

The 15th and 21st terms of an arithmetic sequence are -67 and -97, respectively. What is the 30th term?
30th term, or 
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