Question 4 • AZ-Common Core Algebra II B
A geometric sequence has a constant ratio between consecutive terms. Here, each term is multiplied by 2, and the first term is 1. Using the formula aₙ = a₁rⁿ⁻¹ gives aₙ = 1(2)ⁿ⁻¹, which is choice C, aₙ = (2)ⁿ⁻¹.
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