Question

I need help please. Honestly I barely understand this.

Answer 1

Answer:

4th option

Step-by-step explanation:

The nth term of a geometric sequence is

$a_{n}$ = a₁ $(r)^{n-1}$

where a₁ is the first term and r the common ratio

To find a₁ use a₁₂ = - 12288 , then

a₁ $(2)^{11}$ = - 12288 , that is

a₁ × 2048 = - 12288 ( divide both sides by 2048 )

a₁ = - 6

Then the explicit formula is

$a_{n}$ = - 6 . $2^{n-1}$

Answer 2

Answer:

$- 12288 \div {2}^{11} = - 6 \\ forth \: answer \: is \: correct$