Chapter 11 - Section 11.1 - Sequences - Exercise Set - Page 639: 14

$-2, -5, -8, -11, -14$

Let's evaluate $a_1, a_2, a_3, a_4, $and $a_5$ by plugging in $1, 2, 3, 4, $ and $5$ for each $n$. $a_1 = 1-3(1) = 1 - 3 = -2$ $a_2 = 1-3(2) = 1 - 6 = -5$ $a_3 = 1-3(3) = 1 - 9 = -8$ $a_4 = 1-3(4) = 1 - 12 = -11$ $a_5 = 1-3(5) = 1 - 15 = -14$