I believe its 21 sorry if im wrong
        
                    
             
        
        
        
Answer:
1. Why does the graph not start at zero?
It doesn't start at zero because all ovens start at 350°(probably less, but normally 350°) and not zero degrees.
2. What does it mean when the graph flattens out?
When the graph flattens out, it means that the temperature doesn't increase nor decrease, but instead it remains the same.
 
        
             
        
        
        
When writing the equation keep in mind that 7 + x is said as a term that is squared so it has to be squared while it's still together; (7 + x)².
 
        
             
        
        
        
Answer:The whole numbers are the numbers 0, 1, 2, 3, 4, and so on (the natural numbers and zero). Negative numbers are not considered "whole numbers." All natural numbers are whole numbers, but not all whole numbers are natural numbers since zero is a whole number but not a natural number.
Step-by-step explanation:
 
        
                    
             
        
        
        
3.5 cookies 
Friend one: 3 Friend two: 3
One leftover cookie 
Split in half give one to each and that makes 3.5