Okay, here we have this:
Considering the provided information, we are going to calculate the requested value, so we obtain the following rule of three:

Solving for x:

Finally we obtain that 87.5mL of water should be used for 250g of plaster.
The answer is 32
Step-by-step explanation:
divide 64 by 2 which gives the value of x
Looks like all real numbers except 1. It touch's all the y except 1 aka range