Question

Given a geometric sequence in the table below, create the explicit formula and list any restrictions to the domain.

Answer 1

Answer:

B

Step-by-step explanation:

given the first 3 terms of the geometric sequence - 4, 20, - 100

with r = $\frac{-100}{20}$ = $\frac{20}{-4}$ = - 5

the n th term formula ( explicit formula ) is

$a_{n}$ = $a_{1}$ $r^{n-1}$

here r = - 5 and $a_{1}$ = - 4, hence

$a_{n}$ = - 4 $(-5)^{n-1}$ with n ≥ 1

Answer 2

Answer:

answer would be b.

Step-by-step explanation: