Answer:
Rational
Explanation:
What do you get when you put it in your calculator?
45.7142857142
And then mine ran out of places (12), and yours probably did too, maybe even at 10.
Do you see a pattern in all those digit?
45.7142857142(85)............
It's not a 'decimal' number because it never ends.
And it's not 'irrational' because you can write it as a fraction of two integers.
So it must be 'rational.'