1. what do roller coasters, astronaut training, and a curved shape of a dam a have in common? 2. what is the equation symmetry of a parabola? 3. name three things that can be easily identified by the equation of a parabola in vertex form? 4. solve x^2 + 6 - 9 = 7 by completing the square. show all work! 5. what information do you need in order to use the quadratic formula? 6. a) identify a, b, and c in the equation 0 = 2x^2 - 3x - 8b) solve by using the quadratic formula7. a) what is a projectile? b) what is the special equation used for solving projectile problems?