What is the formula for the rule for the nth term of a arithmetic sequence

The video tutorial explains how to work with arithmetic sequences, focusing on finding the NTH term. It covers understanding the rule of a sequence, determining the first term and common difference, and calculating the number of terms. An example problem is provided to apply these concepts.

Explain the process of identifying the first term in an arithmetic sequence.

What steps would you take to solve a problem involving an arithmetic sequence?