Answer : 
(1) 
Use FOIL method to mulitply (3x – 5)(3x – 5) 

(2) 
Use FOIL method to mulitply (3x - 5)(3x + 5) 

(3) 
Use FOIL method to mulitply -(3x + 5)(3x + 5)
 
(4) 
Use FOIL method to mulitply -(3x + 5)(3x - 5)

So equation 2 is true
 
        
                    
             
        
        
        
Answer:
The answer is C. 18 ounces 
Step-by-step explanation:
You just divide the ounces by the cost and which ever you get lower is the answer 
 
        
             
        
        
        
Answer:
$12.54
Step-by-step explanation:
First, you have to apply the sale to the original price. In this case, you would have to multiply 22 and 43% to get $9.46. Now, you have to subtract 9.46 from 22 to get 12.54.
 
        
             
        
        
        
Answer:

Step-by-step explanation:
We want to find a common factor for 

and

We factor each of them to get;

and

We can observe now that;
The factor common to both expression is 
