Answer:
B. 20x larger
Step-by-step explanation:
3x10^5 = 300000
6x10^6 = 6000000
6000000/300000 = 20
20736
xy^4 = z
x=4 , y=3
(4*3)^4=z
12^4=z
z=20736
y≥1/2x is the answer for this problem
I dont know.. sorry.......