Answer:none
Step-by-step explanation:
Una década son 10 años
70 décadas entonces serán 700 años
12 meses en un año entonces será 700 x 12= 8400 meses
The answer is number 1. Because 12/10 =20/18 is a true statement. None of the others are true
I wrote answers in picture and I use Desmos app to solve this equations