921.2 miles 
Chicago > Memphis 527.4 Memphis > New Orleans 393.8 
527.4 + 393.8
        
             
        
        
        
All u need to do is distribute the 3
(2x+3)3
6x+9
then u can’t do anything else because these terms are not the same and u can’t combine them. hope this helps :)
        
                    
             
        
        
        
Answer:
answer is 57.
Step-by-step explanation:
Given 
m<6= x - 8
m<7 = 2x - 7
We know 
<6 + <7 = 180° [ being linear pair ]
x - 8 + 2x - 7 = 180°
3x - 15 = 180°
3x = 180° + 15°
3x = 195°
x = 195° / 3
x = 65°
Now 
m<6= x - 8 = 65° - 8° = 57°
hope it helps :)