Answer:
100 meters
Step-by-step explanation:
Since the backyard is a square, each side is the same length and there are 4 sides. So, 400÷4=100
-2
15x+6=6x-12
15x-6x=-12-6
9x=-18
x=-2
2/5=x/2250
2250x2=4500
4500/5=900 pounds
check image below
I think it's B because it contains the highest numbers
