The class of macromolecule a steroid belongs to is a lipid.
        
             
        
        
        
Answer:
My Guess Is C if im wrong sorry
Explanation:
Just thinking logicaly 
 
        
             
        
        
        
Parietal and frontal.. whichever one your looking for 
        
             
        
        
        
Answer: Really hope this helps you.
Explanation: it depends in what you are using it for if you are using it for math then it means a relation from a set of inputs to a set of possible outputs where the input and the output is related exactly.