Nancy is 80,000 hours old. tracy is 2,233,800 minutes old. doug is 6,600 days old. who is the oldest? who is the youngest?

Iam so stuck. what is the worked out answer for this question?

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need

The suare root of 9x plus 7 plus the square rot of 2x equall to 7