Easy, just divide
kelly=440mi/8hr=220mi/4hr=110mi/2hr=55mi/1hr
alberto=468mi/9hr=156mi/3hr=52mi/1hr
55>52
kelly drove 55mi in 1 hour
55-52=3
she drove 3 miles more  in 1 hour
        
             
        
        
        
it is 11.25................................
 
        
             
        
        
        
Answer: n + (n + 2) = 84
Step-by-step explanation:
If n is the smallest integer, the other integer must be two more than that, because it has to be odd. The two numbers add up to 84, so the other side of the equation is 84. 
 
        
                    
             
        
        
        
Answer:
51.63
Step-by-step explanation:
100.00
- 48.37
______
   51.63
______