I believe the answer is H, 
Karen had a gift card for $150. She bought 3 gifts for her sister. The gifts cost the same amount, X. After paying for the gifts, her card had a balance of $60. How much did each gift cost?
        
             
        
        
        
Answer:

Step-by-step explanation:
we have n squared, which is at the beginning, and then three more than that would be +3
 
        
                    
             
        
        
        
Answer 
100%
Step-by-step explanation:
 
        
                    
             
        
        
        
 is a irrational number; whatever you do to a irrational number except subtract itself or divide by itself or a multiple of itself will always result in another irrational number.
 is a irrational number; whatever you do to a irrational number except subtract itself or divide by itself or a multiple of itself will always result in another irrational number. 
 
        
             
        
        
        
90 is 1 half of 180. This is because 90 times 2 is 180. If you were to check your work and divide 180 in half you would get 90.
Hope this helps :)