### Home > A2C > Chapter 11 > Lesson 11.2.3 > Problem 11-74

11-74.

A sequence starts

If the sequence is arithmetic:

Find

.Find

.What is the shape of its graph?

Which term is

?

Add (or subtract) the same amount again.

*t*(*n*) = 36 − 12*n*

Try graphing the sequence as a function.

Substitute −624 for *t*(*n*) and solve for *n*.

If the sequence is geometric:

Find

.Find

.What is the shape of its graph?

Which term is

Multiply (or divide) by the same amount again.

Try graphing the sequence as a function.