Answer:
Step-by-step explanation:
a₁ = 12,000
a₂ = 0.80a₁ = 9,600
a₃ = 0.80a₂ = 7,680
a₄ = 0.80a₃ = 6,144
a₅ = 0.80a₄ = 4,915.20
:::::
a₁ = 30
a₂ = 1.30a₁ = 52
a₃ = 1.30a₂ = 67.6 ≅ 68
a₄ = 1.30a₃ = 87.88 ≅ 88
a₅ = 1.30a₄ = 114.244 ≅ 114
