The slope is always going to be rise over run so the answer is 3/12 but in simplest form it is 1/4
        
             
        
        
        
the one strip is a whole fraction strip and the others are just part of the whole
        
             
        
        
        
Percent is pars out of 100
40%=40/100=4/10=0.4
'of' means multiply 
0.4 times something=56
divide both sides by 0.4
something=140
th enumber is 140
        
             
        
        
        
A = cost of 1 drink $12.75 + 4a $12.75 + $12.00 = $24.75
        
                    
             
        
        
        
X/8-1/2=6
X/8=6+1/2=13/2
X/8=52/8
X=52