### Home > GB8I > Chapter 6 Unit 7 > Lesson INT1: 6.2.1 > Problem6-54

6-54.

Write the first $5$ terms for each of the sequences.

1. $a_n = 2n – 5$

$a_1 = 2(1) − 5$
$a_2 = 2(2) − 5$

1. $a_1 = 3$
$a_{n+1} = –2 · a_n$

Note that $a_1$ is given.

$a_2 : a_{1+1} = −2 · a_1$
$a_2 = −2(3)$

$a_3 : a_{2+1} = −2 · a_2$
$a_3 = −2(−6)$