where n is the position of a number in thesequence, a1 is the first number in the given sequence, and d is the common difference. The common diff here is -5 since we have to subtract 5 from each term to get to the next one in the sequence. The first number is -12. So
and you could simplify it a bit to
and finally to
which is a linear representation. Arithmetic sequences can all be simplified down to represent lines. 
What is the explicit formula for this arithmetic sequence?
-12,-17, -22, -27, ......
Mathematics, 18.06.2021 22:50, angellynn581
What is the explicit formula for this arithmetic sequence?
-12,-17, -22, -27, ...
Answers: 3
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