How do you solve this system of equations algebraically with all steps showing? y=x^2+2x y=3x+20

Peyton's field hockey team wins 4 games out of every 7 games played. her team lost 9 games. how many games did peyton's team play?

Sanjay solved the equation below. which property did he use to determine that 7x+42=42 is equivalent to 7(x+6)=42 7x+42=42 7x=0 x=0

What is a correct first step in solving the inequality-4(3-5x)> -6x+9