Point S is the answer 
move -2.25 on the x axis and 2/3 on the y form the origin
        
             
        
        
        
Cut out 18%
100=all, 
all-cut out=remaining
100-18=82
4hrs 20mins=240+20mins=260mins
82% of 260 is 0.82*20=213.2=3 hours and 33.2 minutes
he can runi s 3 hours and 33.2 minutes
        
             
        
        
        
Sum up the total number of votes.
So, 5+7+8=20 students