Answer:
The foot of the ladder is 
10
 feet away from the base of the wall.
Step-by-step explanation:
 
 
        
                    
             
        
        
        
69 is the answer . (34)- (-35) 
        
             
        
        
        
Heidi : 1/6 = 0.166
Lisa : 16% = 0.160
Martina : 0.200
Jaydie : 0.180
least to greatest : Lisa, Heidi, Jaydie, Martina
        
             
        
        
        
(5 + 7x + 6)/2 = 3x + 9
7x + 11 = 6x + 18
7x - 6x = 7
x = 7
EF = 3x + 9
= 3(7) + 9
= 21 + 9
= 30