Find the first, fourth, and eighth terms of the sequence. A (n) = - 3 • 2n-1 A. - 12; - 96; - 1,536 B. - 3; - 24; - 384 C. - 6; - 48; - 768 D. 1; - 216; - 279,936

Question

Gianna

Mathematics

6 October, 08:51

Find the first, fourth, and eighth terms of the sequence. A (n) = - 3 • 2n-1 A. - 12; - 96; - 1,536 B. - 3; - 24; - 384 C. - 6; - 48; - 768 D. 1; - 216; - 279,936

+1

Answers (2)

Know the Answer?

Tori Meyer · Answer 1

B. - 3; - 24, - 384

Cali Page · Answer 2

B. - 3; - 24, - 384

Step-by-step explanation:

The first term is the multiplier of the exponential function, - 3. That tells you immediately that the only correct answer choice is B.

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The general term of a geometric sequence is ...

an = a1·r^ (n-1)

where a1 is the first term and r is the common ratio.