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What is the 9th term of the geometric sequence with this explicit formula?
an= 4.(-2)(n-1)
A. -64
B. 1024
C. -2048
D. -1024
Algebra 1

Respuesta :

caylus

Answer: B: 1024

Step-by-step explanation:

[tex]a_n=4*(-2)^{n-1}\\\\a_9=4*(-2)^{9-1}\\\\=4*(-2)^8\\\\=4*256\\\\=1024\\\\Answer\ B\\[/tex]

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