Saturday
February 28, 2015

Homework Help: math

Posted by Brittany on Wednesday, February 2, 2011 at 3:52pm.

The third and seventh terms of an arithmetic sequence are 10 and 20.
1) What is the value of the 1st term?
2) What is the value of the 9th term?
3) What is the equation to find the nth term in the sequence?

HELP!! PLEASE!!

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