Answer:
Vertical Angles are when angles opposite each other when two lines cross, they are ALWAYS equal. Their measurements are always the same.
Step-by-step explanation:
Answer: 
Work Shown:

Note that (h,k) = (2,-3) is the center and r = 6 is the radius. The last line is not expanded out using the FOIL rule because its common practice to leave it in
form. This form allows the reader to quickly determine the center and radius (rather than have to do a lot of algebraic steps before hand).
Answer:
134.0 in^3
Step-by-step explanation:
Volume = (radius^2 * pi * height)/3 = (4^2 * pi * 8)/3 = 134.0 in^3
All real numbers.
No matter what you plug in, there will always be a corresponding y - value.
it depends what the number is