Answer:
Put the arrow facing the left with a non-filled up dot at the point between 31 and 32.
Step-by-step explanation:
x < 31.5 means that x is lesser than 31.5 and so x cannot be 31.5 itself.
< means lesser.
> means more than.
A filled up dot means that the number itself is included in the values of x.
A non-filled up dot means that the number itself is not included in the values of x.
An arrow facing left means lesser than that number.
An arrow facing right means more than that number.
Since 31.5 is not included in the values of x, we will be using the non-filled up dot.
