Elimination because u could multiply the second equation by -3 which would cancel the x and allow you to solve for y and then everntually x but yea elimination is the best method
An angle is any two rays that share an endpoint. the reason that last part is important is becasue they could be one ray that starts in seatlle and one ray starting over in new york. these would not for an angle. if i confused you let me know and ill try to clarify.
The answer is C. Hope this helps
9x(12+7)
distribute the 9x
108x+63
F(x) = 3(x-4)^2-38 because finding the perfect square would get you f(x)+38=3(x^2-8x+16) and then finding the squareroot of that and moving the constant on the left back to the right would leave u with f(x)=3(x-4)^2-38
