On a windy day, Lucy was holding a balloon, but she accidentally let it go. The height of the balloon in feet $t$ seconds after Lucy released it is given by $h(t)$. The graph of $h(t)$ appears below.

a) How high was the balloon after 6 seconds? Please include units in your answer.

b) When, approximately, is the balloon 3 feet above the ground?
seconds

c) Solve $h(t) = 2$. Please include units in your answer.

Hint: