If you're talking about just the decimal, then yes it is.
If you're talking about 22/7, then it still is.
But if you're talking about pi, then it isn't rational.
Answer:

Step-by-step explanation:
10 apples..........................................
D. I think you meant to say 2/3 x so the only correct answer is d
5k^2 = 25 ^ 3 = 15625
5k^6 = 15625
Hope this helps