Answer:
I believe your answer is commutative property
 
        
             
        
        
        
Answer:
a relation and a function 
= A
Step-by-step explanation:
 
        
                    
             
        
        
        
$1 = 3.70 rand
$450 is the same as 450 * $1, so multiply both sides of the conversion equation above by 450.
450 * $1 = 450 * 3.70 rand
$450 = 1665 rand
        
             
        
        
        
Let's say that y is the unknown
180=2x+3+5x+1+y
180=7x+4+y
180-7x-4=y
176-7x=y=third angle