B: 78.50
If you plug in 5 for r, then you get  3.14 * 25, which is equal to 78.5 
Hope this helps!
        
             
        
        
        
The answer is D I made a video incase you can’t see the picture well.
Message me if you want the video.
 
        
        
        
Make each adult x and each kid 5x
 and 
set equal to 14.
 so it would be
 3.5x=14. 
 14/3.5 = 4 
so 
x  = 4.
 adult tickets are 4$ while kids are 2$
        
                    
             
        
        
        
maple syrup = x
corn syrup = 50-x 
6x + 0.8(50-x)=2.36*50
6x+40-0.8x=118
5,2x=78
x= 15 gallons of maple syrup
50-15 = 35 gallons of corn syrup
 
        
             
        
        
        
0.5625 will be the answer to 9 divided by 16