Y(y + 4) - y2 = 6
y2 + 4y - y2 = 6
4y = 6 ⇒ False
        
                    
             
        
        
        
Hope this helps you and good-luck
 
        
             
        
        
        
Um, I don't know if I actually answered the question, but I think that the second one is cheaper to rent. 
        
             
        
        
        
1. Correct answer is a (since when you are not given the n values, it is implied that the first value is 1). 
3. Correct answer is a (a(n)=-3+4(1-1)=-3).
 7. The pattern is to reduce the previous value by 4, thus the 12th term of the sequence is -24 (a(n)=20 - 4(n-1)=20 - 4(12-1)=-24).
 8. Missing term is 26 (32+20=52; 52/2=26).
 10. Pattern is 625/1=625; 625/5=125; 125/5=25; 25/5=5, thus. the 10th term is 1/3125 (answer a).
        
             
        
        
        

 and 

(f+g)(x) = 

combining like terms gives you answer choice B