The table shows the heights $y$ of a competitive water-skier $x$ seconds after jumping off a ramp. Write a function that models the height of the water-skier over time.

The function y=_ models the height.

When is the water-skier 5 feet above the water? Round your answer to the nearest hundredth.

The skier is 5 feet above the water after about _ second(s).

How long is the skier in the air?

The skier is in the air for _ second(s).