What is the nth term rule for this arithmetic sequence?
Check the final answer first, then review the worked steps.
Problem
What is the nth term rule for this arithmetic sequence?
Step-by-step solution
The common difference is 4. The first term is -13. The nth term rule is $a_n = a_1 + (n-1)d$, so $a_n = -13 + (n-1)4 = -13 + 4n - 4 = 4n - 17$.
Answer
$4n-17$