Vertical Motion

hey guys,

I need help with a vertical motion problem, i usually don't go online but i'm really stumped

Mike throws a pass during a football game to jim. the football leaves his hand 6 feet above the ground and has an initial velocity of 80fps
a) write an equation that represents the scenario if its path can be modeled by
h=-16t^2+vt+h

b) i have to graph it and sketch the vertex y and x intercepts

c) when is the football at its highest

d)what is the max height the football is thrown

e) when does the football hit the ground