Answer:
1. Even - B
2. Even - B
3. Odd - A
Step-by-step explanation:
Example 1: 7+7 = 14 
7 is odd, 14 is even.
Example 2: 4 + 4 = 8
4 is even, and 8 is even.
Example 3: 4 + 5 = 9
4 is even, 5 is odd, 9 is odd.
 
        
                    
             
        
        
        
Answer: changed by $48
Step-by-step explanation: 6 times $4 = $24 + $4 times 6 = $24 total= $48
Also $4 times 12 = $48
 
        
             
        
        
        
Answer:
 1) 
 2) 
 3) 
 4) 40
 5) 
Step-by-step explanation:
 1) Distribute the negative sign that is outside the parentheses and then you must add like terms, as following:
 
 2) According to the Product property of exponents, when you multiply powers with the same base, you must add the exponents. Then:
 
 3) Apply the Distributive property and the Product property of exponents. Then, you obtain:
 
 4)  is a square of a sum, then, by definition you have:
 is a square of a sum, then, by definition you have:
 
 Then:
 
 The coefficient of the second term is the number in front of the variable <em>a.</em> Then, the answer is: 40
5)  Apply the Distributive property and the Product property of exponents, then, oyou must add the like terms:
 