### Home > A2C > Chapter 13 > Lesson 13.2.3 > Problem13-135

13-135.

Set up an equation to describe the sequence.

t(n) = −2 − 3(n − 1)

Now substitute 12 for n to find the 12th term.

t(12) = −2 − 3(11)

−35

See part (a).