Question

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

Answer 1

B. -3; -24, -384

Explanation:

Answer 2

B. -3; -24, -384

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.