To square a number means to multiply it by itself. So 9 squared would be:
9x9
Which is
81
I hope this Helps!
        
                    
             
        
        
        
Answer:
The expression to determine the total cost in dollars is  .
.
Step-by-step explanation:
Given:
Service charge to make a photo book = $20
Cost per extra page = $0.75
Cost to ship the complete photo book = $5
We need to write expression to determine the total cost in dollars.
Solution:
Let the number of extra pages be denoted by 'x'.
Also Let the Total cost be denoted by 'y'.
Now we can say that;
Total cost will be equal to sum of Service charge to make a photo book and  Cost per extra page multiplied by number of extra pages and Cost to ship the complete photo book.
framing in equation form we get;

Hence the expression to determine the total cost in dollars is  .
.
 
        
             
        
        
        
Answer:
3x(x^2+3x-5) - factorised
Step-by-step explanation:
 
        
                    
             
        
        
        
Raisins has the lowest unit rate, which is 3.5x. Cranberries unit rate is 4.5 (18/4). 
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