Write the first four terms of the sequence whose general term is given.
-$$a _ { n } = ( - 1 ) ^ { n } ( n + 6 )$$
A) $- 7,8 , - 9,10$
B) $- 7 , - 8 , - 9 , - 10$
C) $- 7 , - 16 , - 27 , - 40$
D) $7,8,9,10$

Question

Quizplus · Accepted Answer

The first four terms are found by substituting $n = 1, 2, 3, 4$ into the general term $a_n = (-1)^n(n + 6)$. For $n = 1$, $a_1 = (-1)^1(1 + 6) = -7$; for $n = 2$, $a_2 = (-1)^2(2 + 6) = 8$; for $n = 3$, $a_3 = (-1)^3(3 + 6) = -9$; for $n = 4$, $a_4 = (-1)^4(4 + 6) = 10$.

Write the First Four Terms of the Sequence Whose General an=(−1)n(n+6)a _ { n } = ( - 1 ) ^ { n } ( n + 6 )an​=(−1)n(n+6)

Write the First Four Terms of the Sequence Whose General $a _ { n } = ( - 1 ) ^ { n } ( n + 6 )$