Suppose C = 30y + 15 and y = 40x + 25. Which of the following is equivalent to C = 30y + 15, but written only in terms of x?

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?

If you could answer these your a life saver

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