Answer:
12
Step-by-step explanation:
 
        
                    
             
        
        
        
52) 115-3=112 that were given away
Now divide 112 by each, seeing if they give you a non mixed number.
The only one that would give you a full number would be 28. So there are 28 kids in his class.
54) 19-4=15
Now double 15 since he sold half, so he started with 30 stamps originally. 
56) 500-2*=324
-2*=-176
age=88
        
             
        
        
        
Answer:
<u>Option A:</u>

Explanation:
The revenue, R(x) is the product of the number of teams who entered the tournament, T(x), times the entry fee paid by each team, F(x); then you can write:
Thus you must multiply the two functions (polynomials):
Use distributive property:

Simplify:

Add like terms:

 
        
             
        
        
        
Answer:She will count the cookies by 2's
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
1/12^2 = 1/144