Answer:
k < 50$
Step-by-step explanation:
She wants the keyboard for less than 50$, so the price, k, is less than 50 in this inequality. 
 
        
                    
             
        
        
        
Answer:
9
Step-by-step explanation:
Cross Multiply: 
Simplify: 4x=36
x=9
 
        
             
        
        
        
If you mean you get them by diving them by 100 or something over 100(as in a fraction) that's the answer, I'm incredibly sorry if it is not what you meant!
        
             
        
        
        
Answer: $145 in interest.
Step-by-step explanation: 2% of $1,450 is $29. Multiply this by 5 and you get $145.