Problem

The start of an arithmetic sequence is shown.
What is the $n^{th}$ term rule for the sequence?

Answer

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Answer

Calculate the $n^{th}$ term rule: $a_{n} = a_{1} + (n - 1) d$

Steps

Step 1 ：Identify the common difference: $d$

Step 2 ：Find the first term: $a_{1}$

Step 3 ：Calculate the $n^{th}$ term rule: $a_{n} = a_{1} + (n - 1) d$

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