Choose the one alternative that best completes the statement or answers the question.
The nth term of a sequence is given. Write the first four terms of the sequence.
-$$a _ { n } = 9 n - 7$$
A) $2,11,20,29$
B) $2,4,6,8$
C) $- 2 , - 11 , - 20 , - 29$
D) $- 2 , - 4 , - 6 , - 8$

Question

Quizplus · Accepted Answer

To find the first four terms of the sequence, substitute $n = 1, 2, 3, 4$ into the given formula $a_n = 9n - 7$. For $n = 1$, $a_1 = 9(1) - 7 = 2$. For $n = 2$, $a_2 = 9(2) - 7 = 18 - 7 = 11$. For $n = 3$, $a_3 = 9(3) - 7 = 27 - 7 = 20$. For $n = 4$, $a_4 = 9(4) - 7 = 36 - 7 = 29$. Therefore, the first four terms are 2, 11, 20, 29.

Choose the One Alternative That Best Completes the Statement or Answers