What question can you never answer yes to?

Answer this question! 30 points and brainliest! only if you know the answer.

Which elements in the set below are integers? 12, –3⁄4,√ 25 , –7, √ 5 , 14⁄7, 9 a. 12, √ 25 , –7, 9 b. 12, √ 25 , –7, 14⁄7, 9 c. –3⁄4, 25 , √ 5 ,14⁄7 d. 12, –7, 9

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