Please answer fast to all 3 of these problems. please tell me the area.

Which math sentence can be used to determine if the triangle is a right triangle?

Fa bus driver leaves her first stop by 7: 00 a.m., her route will take less than 37 minutes. if she leaves after 7: 00 a.m., she estimates that the same route will take no less than 42 minutes. which inequality represents the time it takes to drive the route, r?

Which of the following is not a subset of {1,2,3}?