SOLUTION: determine the number of terms in finite arthmetic sequence. -6,-3,0,...,222

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Question 762542: determine the number of terms in finite arthmetic sequence.
-6,-3,0,...,222

Answer by josgarithmetic(39618)   (Show Source): You can put this solution on YOUR website!
What is the general term? First term is -6 and common difference is +3.
Any term a is


If a=222, then you find the value of n by equating the formula with the value of a.


Solve for n.

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