A vendor sold 81 hotdogs during a football game. If the ratio of hotdogs to hamburgers sold was 9: 4, how many hamburgers did th
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If a₁ = 5 and , then
a₂ = a₁ - 3 = 5 - 3 = 2
a₃ = a₂ - 3 = 2 - 3 = -1
a₄ = a₃ - 3 = -1 - 3 = -4
a₅ = a₄ - 3 = -4 - 3 = -7
a₆ = a₅ - 3 = -7 - 3 = -10