Please someone answer this :D I really need the answer

Acable car begins its trip by moving up a hill. as it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet. then, as the car moves down to the hill’s base, its elevation drops at the same rate.

Is the square root of 4 plus the square root of 16 rational?

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?