Answer:
70
Step-by-step explanation: the type of angle it is 
 
        
                    
             
        
        
        
Answer: That is a function!
Step-by-step explanation:
 
        
             
        
        
        
If your looking for Standard Form Rewrite it as...  
 
        
                    
             
        
        
        
Solve using equations:
Gina 11 = a+b+c
Sam 27 = 2a+3b+2c
Robby 19= a+2b+2c
Gina *2 give 22=2a+2b+2c (subtract this from Sam to give)
b=5
the subtract Robby from Gina *2 to give a=3
[Question 1] 
let d = number of dramas Gina rented, c = # of comedies, and t = # of documentaries: 
[equation a] d + c + t = 11 
[equation b] 2d + 3c + 2t = 27 
[equation c] d + 2c + 2t = 19 
if we subtract [a] from [c] we get: 
[equation d] c + t = 8 
if we subtract [c]*2 from [b] we get: 
[equation e] -c - 2t = -11 or 
[equation e] c + 2t = 11 
Now we can subtract [e] from [d] to solve for t: 
t = 3 
Now put in 3 for t in [d] or [e] to solve for c: 
c + 2(3) = 11 
c + 6 = 11 
c = 5 
So she rented 5 comedies and 3 documentaries which leaves 3 dramas (which is answer A)
        
                    
             
        
        
        
B is correct, because there is only 1 output for each input.