A^2y+a^3 for a=-1.5 and y = -8.5

Taking algebra two apex courses and need with these questions

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

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin