### Home > CC4 > Chapter 10 > Lesson 10.1.1 > Problem10-22

10-22.

Write the first four terms of each of the following sequences. Homework Help ✎

1. $a_n=3·5^{n−1}$

• Evaluate the equation for n = 1, n = 2, n = 3, and n = 4.

1. $a_1=10,\ a_{n+1}=-5a_n$

• This sequence is being defined recursively.
The first term is 10.
The next term is calculated by multiplying the previous term by −5.
Continue the pattern.