Respuesta :

janmilczek

Answer:

[tex]\frac{80}{9}[/tex] or in "simple" form  [tex]8\frac{8}{9}[/tex]

Step-by-step explanation:

a(2) = a(1) * (2/3) = 20*(2/3) = 40/3

a(3) = a(2) * (2/3) = 40/3*(2/3) = 80/9