Use Recursion Formulas
-$a _ { 1 } = - 5$ and $a _ { n } = - 4 a _ { n - 1 }$ for $n \geq 2$
A) $- 5,20 , - 80,320$
B) $5 , - 20,80 , - 320$
C) $- 5 , - 20 , - 80 , - 320$
D) $- 5,22 , - 82,322$

Question

Quizplus · Accepted Answer

The sequence starts with $a_1 = -5$. Using the recursion formula $a_n = -4a_{n-1}$, the next terms are calculated as follows: $a_2 = -4(-5) = 20$, $a_3 = -4(20) = -80$, $a_4 = -4(-80) = 320$, matching option A.

Use Recursion Formulas - a1=−5a _ { 1 } = - 5a1​=−5

Use Recursion Formulas
- $a _ { 1 } = - 5$