Answer:
-1
Step-by-step explanation:
y-1=-3
y=-2
.:1/2y=1/2(-2)=-1
Answer:
Area of the circle=
Step-by-step explanation:
Area of a circle=
For radius(r)=8 km
The area of the circle is :
=
As:

Area of the circle:

The Area of the circle with the radius of
is 
I think 22 is 60 idk though but I think
Answer:
Step-by-step explanation:
9000-500h=0+500h
h= 9 hours