The best example of a plane would be A) the surface of a flat table. A plane could also be represented by anything that is flat in nature. 
Hope this helps! :)
        
                    
             
        
        
        
The Disney trip was 5 years ago. Now, Erin is 16 and her sister is 8.
        
             
        
        
        
(16*0) + (4*1)
16*10 = 160
4*1 = 4
160 + 4
The answer is 164! :)