6.75 teaspoons 
So it takes 0.1875 teaspoon of baking powder to make one muffin. Then you just multiply 0.1875 by 36 and you get 6.75.   :)
        
             
        
        
        
Since the diameter of the cylinder is 10, its radius is half that, or 5, thus
 
 
        
        
        
Museum C because for every 3 guests you pay $4(?) each.
3/4
12/16=3/4
18/24=3/4
        
                    
             
        
        
        
76% would be your test score