### Home > CAAC > Chapter 13 > Lesson 13.RE1-S > Problem 2-128

2-128.

Consider the sequence 3, 9, … Homework Help ✎

Assuming that the sequence is arithmetic with

*t*(1) as the first term, find the next four terms of the sequence and then write a rule for*t*(*n*).Assuming that the sequence is geometric with

*t*(1) as the first term, find the next four terms of the sequence and then write a rule for*t*(*n*).Create a sequence that begins with 3 that is neither arithmetic nor geometric. For your sequence, write the next four terms and, if you can, write a rule for

*t*(*n*).

Refer to the Math Notes boxes in Lessons 2.1.6 and 2.1.8, shown below.

Try copying and completing the table below: