28 because 2.5 times 8 equals 20 plus that 8 equals 28.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
y+30
Step-by-step explanation:
the sum of the numbers is 15y
the new sum after increase each number by 30 is 15y+450
the new mean 15y+450/15
= y+30
 
        
             
        
        
        
Negotiating in trade means you are bartering.
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation:
Well automatically we can eliminate B and D because they make no sense whatsoever. So that leaves us with A and C. A is telling us to find the mean so it has to be that one. So, with procces of elimination the answer has to be A. I know this because the owner needs to find an average to see how many bottles he will have sold daily. ;) Your very much welcome 
 
        
             
        
        
        
Answer:
Step-by-step explanation:
<u>Arc length formula:</u>
<u>Substitute values:</u>
- s = 2*3.14*15(80/360) = 20.93 in