Respuesta :

a(n) = a(n - 1) + 3.4
a(1) = 7.3
d = 3.4

a(n) = a + (n - 1)d = 7.3 + (n - 1)3.4 = 7.3 + 3.4n - 3.4 = 3.9 + 3.4n

An = 3.9 + 3.4n