The answer is
y^2-4x+4y-4=y^2+4y-4x-4=(y+2)²-4x - 8= 0
it is the same of x + 2 = (1/4 ) (y+2)²
the main formula is x-h= a (y-k)² so h=-2, k= - 2 and a=1/4
Been a while since I've done this but from my memory the answers are
2. Reason: KL = LM
3. Statement: Definition of midpoint
4. Statement: L is the midpoint of KM
5. Reason: Transitive Property of Congruence
Hope this helps!
Answer: https://drive.google.com/file/d/1g7bDTS0c5Sz30JzGjsQl30tZX5sfUqe_/view?usp=drivesdk (answer to bottom left one)
Step-by-step explanation: that link should help somewhat
Let
r------> the radius of the gear
we know that
The value of r, must be greater than 
cm, but not exceed 
cm
The compound inequality that represent this situation is
the solution is the interval-------> ![(4,4.1]](https://tex.z-dn.net/?f=%284%2C4.1%5D)
all real numbers greater than 
and less than or equal to 
the solution in the attached figure
<u>the answer is the option A</u>
and 
