center-radius form of the circle (x – h)^2 + (y – k^)2 = r^2
(x-4)^2 + (y--5)^2 = 2^2
(x-4)^2 +(y+5)^2 = 4
For the first one:
x-1<span><-1
Add one on both sides.
x</span><span><0
For the second one:
8x+9</span><span>≥41
Subtract nine on both sides.
8x+</span><span>≥32
Divide by eight on both sides.
x</span><span>≥4
HOPE THIS HELPS YOU! ^_^</span>
Answer:

Step-by-step explanation:
remember that,

given that,
thus substitute:

divide both sides by 4/3π:

cubic root both sides:

and we are done!