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WILL GIVE BRAINLIEST The formula for any geometric sequence is an = a1 · rn - 1, where an represents the value of the nth term, a1 represents the value of the first term, r represents the common ratio, and n represents the term number. What is the formula for the sequence 2, -6, 18, -54, ...?
an = 2 · 3 n - 1
an = 2 · (-3) n - 1
an = -3 · 2 n - 1
an = 3 · 2 n - 1

Respuesta :

Answer:

it is b= 2 · (-3) n - 1

2= a= first number

-3= ratio

Step-by-step explanation:

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