Answer
Both b) 64 d) 37 is your answer (If you meant Y is greater than or equal to 64 then only d would work).
Step-by-step explanation:
<u>Key skills needed for understanding: Inequalities</u>
1) The inequality says that Y > 64, which means that Y has to be higher than 64.
2) This means that Anything not higher than 64 would not work.
3) Based on what you typed, both b and d are possible answers. 64 is not bigger than 64, and 37 is not bigger than 64.
Therefore, b and d are both answers (so there might be a typo in the problem as it only asks for one answer).