Answer:
i) Because so that we can understand them steps by step
ii)We could enjoy when we study in school 
 
        
                    
             
        
        
        
Answer:
 1/24
Step-by-step explanation:
SHAWTYYY THIRSTY
 
        
                    
             
        
        
        
There are 64 options available.
To find this answer, we just have to multiply all of the possibilities for each choice. This is the fundamental counting principle.
The are 4 sizes, 2 crusts and 8 toppings.
4 x 2 x 8 = 64
        
                    
             
        
        
        
First we want to find how much it costs for 1 stamp, so we do 8.28 divided by 18, which equals 0.46. Then, we multiply 0.46 and 12, which is 5.52. Therefore, it would cost $5.52 to buy 12 stamps.