Marvin earns 8.25 per hour at his summer job. he wants to buy a video game system that costs 206.25

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Which equation shows the quadratic formula used correctly to solve 5x2 + 3x -4 0 for x? cos -3+ v (3) 2-4() 2(5) 3+ |(3)² +4() 205) 3+ (3) 2-4() -3+ v (3)² +4()

Can someone me and explain..will award brainlest!