Respuesta :

Answer:

aₙ = 7.5 - 1.25*(n-1)

Step-by-step explanation:

a₁ = 7.5*1.25(1-1) = 7.5

a₂ = 7.5*1.25(2-1) = 6.25

a₃ = 7.5*1.25(3-1) = 5.0

.....

aₙ = 7.5 - 1.25*(n-1)

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