20. What are the solutions? 21. Plug the solutions into the system to prove that they are the correct solutions.. up or down? Part G: PSAT/SAT Questions he middle. 22. What are the solutions to the equation x2 - 3 = x? A) _1 + VI1 2 B) -1 + V13 2 C) 1 + Vil 2 D) 1 + V13 2 Show your work: 23. If x > 0 and 2x2 + 3x - 2 =0, what is the value of x? Show your work:Part E: Quadratic Inequalities wnelisupe pitsibsup ent ovine . y > x - x+1 vielslumoo 15. Graph the inequality on Desmos. Sketch the graph below. -6 -5 -4 -3 -2 -1 01 2 3 4 5 6 * - - 3 - 1-4- - 5 - 16. Choose a point in the shaded region and plug it into the inequality to prove that it is a solution. 17. Choose a point in the non-shaded region and plug it into the inequality to prove that it is not a solution. Part F: Solving Quadratic and Linear Systems by Graphing y = x-x+1 y =- x+2 18. Graph the system of equations on Desmos. Sketch your graph to the right. 6 -5 -4 -3 -2 -1 0 2 3 4 5 6 * 19. How many solutions are there?24. The graph shows the height above ground, in meters, of a ball x seconds after the ball was launched a upward from a platform. Which statement is the best interpretation of the marked point (1.0, 4.8) in this context? Height above ground (meters) A) 1.0 second after being launched, the ball's height N W A above ground is 4.8 meters. B) 4.8 seconds after being launched, the ball's height above ground is 1.0 meter. C) The ball was launched from an initial height of 1.0 meter with an initial velocity of 4.8 meters per second. Time (seconds) D) The ball was launched from an initial height of 4.8 meters with an initial velocity of 1.0 meter per second. 25. 2x2+7x- 15 = 0 Show your work: If r and s are two solutions of the equation above and r > s, which of the following is the value of r - s ? A) 15 B) C) NIW N E NC D)