The answer is 60 (wow this was a fast answer wish people answered my questions this fast)
 
        
                    
             
        
        
        
I cant even see the picture clearly
        
             
        
        
        
Sum of polynomials are always polynomials.
Note that despite it's name, single constants, monomials, binomials, trinomials, and expressions with more than three terms are all polynomials. 
For example,
0, π sqrt(2)x, 4x+2, x^2+3x+4, x^2-x^2, x^5+x/ π -1 
are all polynomials.
What makes an expression NOT a polynomial?
Expressions that contain non-integer or negative powers of variables, rational functions, infinite series.
For example,
sqrt(x+1), 1/x+4, 1+x+ x^2/2!+x^3/3!+x^4/4!+...., (5x+3)/(6x+7) 
are NOT polynomials.
        
             
        
        
            
            
                Find the mean of the following<br>
data set.<br>
1,1,2,4,6,7,7,8,9,10,12,13,17,17,18 
                lisabon 2012 [21]             
         
        
Answer:
8.8 
Step-by-step explanation:
Add all numbers together to get 132 
All number of numbers together to get 15 
Divide the sum of all numbers by the number of numbers: 
132/15
8.8 
pls mark brainliest!