### Home > CCA2 > Chapter 4 > Lesson 4.1.2 > Problem 4-26

4-26.

Consider the arithmetic sequence and

*.*

Since this sequence is arithmetic, what has to be true about the differences between terms?

How many times would you add the difference to get from

Since you know the first term and the common difference, you can write all four terms of the sequence.

Use the sequence to write a system of equations: and