Stats homework I need help please

Passengers usually start to board their flights 1 hour before the scheduled take off time. the gate will be closed 15 minutes before the takeoff time. jack’s plane is scheduled to take off at 12: 05 a.m. if he arrives at the gate at 11: 45 p.m., can he board the flight?

Find two rational expressions that have the difference of 2-n/n-4

The radical equation 2+√2x-3 = √x+7 has a solution set [x= a0} and an extraneous root x = a1.