You are given that x is directly proportional to y^3, and y is inversely proportional to sqrt z. If the value of x is 3 when z is 12, what is the value of x when z is equal to 75? Express your answer as a common fraction.
When you write 'urgent' on your posts it is great discouragement for me (And I expect for others too)
Why do you think your question should take priority over others?
If it is because your exam or assignment is due in two minutes, that would be a good reason for us not to do it at all.
Our aim here is not to help people cheat.