Answer:
D
Step-by-step explanation:
 
        
             
        
        
        
I'm assuming you meant to write a^4 = 625. 
If that is the case, then note how 625 = 25^2, and how a^4 is the same as (a^2)^2
So we go from this
a^4 = 625
to this
(a^2)^2 = 25^2
Apply the square root to both sides and you'll end up with: a^2 = 25
From here, apply the square root again to end up with the final answer: a = 5 or a = -5
As a check:
a^4 = (-5)^4 = (-5)*(-5)*(-5)*(-5) = 25*25 = 625
a^4 = (5)^4 = (5)*(5)*(5)*(5) = 25*25 = 625
Both values of 'a' work out
 
        
             
        
        
        
Who eats onion pizza?
anyway, make bases same
1/4 times 5/5=5/20
2/5 times 4/4=8/20
5/20 vs 8/20
8/20 i bigger
2/5 is bigger
actaully depends on how big th pizza is
cheese could be 12 feet wide and the onion could be 12 inches wide