Answer:22
Step-by-step explanation: since f(8) so x=8 
 substitiuting x in 2x+6
                                       f(8)= 2x8+6=22 
so f(8)=22
Hope this helps! :)
 
        
             
        
        
        
Answer:
I think b is the correct answer
 
        
             
        
        
        
Answer:
c 
i think
Step-by-step explanation:
 
        
             
        
        
        
Answer:
A intersection B = ( elements which are common in both) 
= ( 2,4,7,19) 
A union B = ( all the elements which are either in A or in B). 
= ( 2, 4, 7 , 13, 14, 19, 20 , 3, 5, 6, 10,11, 12 , 15,17 , 18 , 19 )
 
 
        
             
        
        
        
Answer:
<h3>Area of a circle= πr²</h3><h2>50.24 = 3.14 *r²</h2><h2>r²= 50.24/3.14</h2><h2>r² =16</h2><h2>r= √16</h2><h2>r = 4</h2>