1. Assume you are the event coordinator for a large performance theater. One of the hottest new Broadway musicals has began to tour, and the city is first stop on tour. You require to supply information about projected ticket sales to box office manager. Box office manager utilizes this information to anticipate staffing requirements until tickets sell out. You give manager with the quadratic equation which models expected number of ticket sales for each day x. ( x=1 is day tickets go on sale).
Tickets= -0.2x2+12x+11
a. Does graph of the equation open up or down? How to determine this?