X^2+y^2=49 , y=7-x solve it in substitution

What is the quotient? x+5/ 3x²+4x+5 © 3x2 – 11 + x + s 3x – 11 + 60 x + 5 o 3x2 - 11 - 50 x + 5 3x – 11 - - x + 5

Which graph represents the equation y =4x

What is the the greatest common factor ?