A.1. Answer= The decimal does appear to have a repeating pattern because, the numbers after the decimal keep going on and on.
A.2. Answer= 1.345345634567 is a rational number. My reasoning is, every positive number is a rational number.
Hope this helps!! :D
I tried helping but failed ☹️ your guess is as good as mine
12976, 12961, 12691, 12081
1.5 as a mixed muber is 1 and 1/2, as an improper fraction it could be 3/2