Plz Help me i need to finish this

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Of the 304 people who attended a school play, 5/8 were students. how many of the people who attended were students.