Answer:
15
Step-by-step explanation:
trust me bro
 
        
             
        
        
        
1/3 + 7x = 1/3 + 7(5 )=
1/3+35 
=1/3 + 105/3 =
106/3=
35 1/3
        
                    
             
        
        
        
You add all the sides together and divide by the number of side so in your case it would be 6 sides and you should get your perimeter i think thats how you do it i could be wrong 
        
                    
             
        
        
        
A function is something that lets you work out what something is depending a variable 
e.g: x = y + 5
this function states that the unknown x is equal to whatever the variable y is plus 5
        
             
        
        
        
Answer:
1. D 2.A 3.D 4.D
Step-by-step explanation: