Answer:  7(3m - 7n)
<u>Step-by-step explanation:</u>
Factor each term then see what value(s) they have in common:
           21m         -          49n
             ∧                        ∧
           3 · 7 · m              7 · 7 · n
Both terms have a 7 in common.  What is left over after removing the 7?
21m: 7(3m)
49n: 7(7n)
GCF: 7           Leftovers: 3m <em>and</em>  7n
Factored form of expression is: 7(3m - 7n)
 
        
                    
             
        
        
        
To solve, substitute the values of x with 2.
(2)^1 - (2) - 1 + 2^0 = 0.
The answer would be a)
        
             
        
        
        
Answer:
80
Step-by-step explanation:
that would be the area of the YARD the fence is surround area is width times length.  
if they are really asking the area of the fence itself there isnt enough info here.  (I think)