Help? im really bad at math:(

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

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours

Is the power produced directly proportional to the wind speed, give reasons for your answer?