I need X can someone help with this proportion​

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?

What is the volume of this square pyramid?

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)