First you need to write an equation or an inequality.
5+1.80x<=12 
the x here is how many miles you are paying for, now you just solve for x. 
5+1.80x<=12
-5                 -5
1.80x<=7
/1.80         /1.80
x<=3.8
you can travel only three whole miles, you do not have enough money to go four full miles.
        
             
        
        
        
You would have about 3472 Hours
.18\8=1.44 for 8 hour
5000/1.44=3472
Hope this helps :)
 
        
             
        
        
        
Answer:
54.90
Step-by-step explanation:
 
        
             
        
        
        
101.28-96 = 5.28
5.28/96 = 0.055
0.055 x 100% = 5.5%