Cuanto vale 10 de 15 en un examen?​

Acompany is testing in comparing to lightbulb designs the box plot shows the number of hours that each lightbulb design last before burning out which statement is best supported by the information of the plot

Will give brainliest what is the value of x? enter your answer in the box.

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