Answer:
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Step-by-step explanation:
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9, 12, 15
Using the recursive formula and T₁ = 6 , then
T₂ = T₁ + 3 = 6 + 3 = 9
T₃ = T₂ + 3 = 9 + 3 = 12
T₄ = T₃ + 3 = 12 + 3 = 15
