### Home > A2C > Chapter 13 > Lesson 13.2.3 > Problem 13-135

13-135.

Each of the following sums is the beginning of an arithmetic series. Find the *n*^{th} term of each series, for the specified value of *n*.

Set up an equation to describe the sequence.

Now substitute 12 for

*n*to find the 12th term.−

See part (a).