Question 3 • TX-Pre-Calculus
Each term is found by multiplying the previous term by 1.5: 3 ÷ 2 = 1.5 and 4.5 ÷ 3 = 1.5. This is a geometric sequence with first term 2 and common ratio 1.5, so its explicit rule is aₙ = 2(1.5)ⁿ⁻¹. Choice B gives this rule.
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