-10/2 = rational number
-13.4 = rational number
sqrt 18 = irrational number
22.7(repeating) = rational number
the oddball is sqrt 18 :)
Answer:

Step-by-step explanation:
The domain is simply the farthest left ppint to the farthest right point on the graph.
Hello there!
3.14 is rational. Hope this helps!
Why? Because pi is irrational, pi squared and the square root of pi is irratonal as well. Hope this helps you!
~Just an emotional teen

20 beacause 20 x 2 = 40 and twice as many means 2 x ....
The answer is 7 hope that helped and have a good and always good luck