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Write an EQUATION for the nth term of each arithmetic sequence 15,13,11,9,...

Write an EQUATION for the nth term of each arithmetic sequence 15,13,11,9,...
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3 votes
Write an EQUATION for the nth term of each arithmetic sequence
15,13,11,9,...

User JC Lango
by
7.2k points

1 Answer

5 votes
First you have to organize it like this
1 : 2 : 3 : 4
15 : 13: 11 : 9
If the sequence is decreasing then the nth term equation will start with a negative.try to see which will work -1,-2,-3,-4...
The answer is: x= -3n + 17
User Pramod
by
7.7k points
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