Respuesta :

at x=1, you have [tex]f(1)=12419(1.4)^1=(12419)(1.4)[/tex]
at x=2, you have [tex]f(2)=12419(1.4)^2=(12419)(1.4)(1.4)[/tex]

so
f(1) times 1.4=f(2)

therefor the answer is C