# Use arithmetic sequence formulas

Given the formula of an arithmetic sequence, either in explicit form or in recursive form, find a specific term in the sequence.

### Problem

The arithmetic sequence a, left parenthesis, n, right parenthesis is defined by the following formula:
a, left parenthesis, n, right parenthesis, equals, 7, plus, 4, left parenthesis, n, minus, 1, right parenthesis
What is the eighth term in the sequence?