## Intermediate Algebra for College Students (7th Edition)

$a_1 = -3 \\a_2 = 9 \\a_3 = -27 \\a_4 = 81$
To find the first four terms of the given sequence, substitute 1, 2, 3, and 4 to $n$, respectively, then simplify. $a_1 = (-3)^1 = -3 \\a_2 = (-3)^2 = (-3)(-3) = 9 \\a_3 = (-3)^{3} = (-3)(-3)(-3)=-27 \\a_4 = (-3)^4 = (-3)(-3)(-3)(-3)=81$