How does the x- coordinate of your seat change as the wheel turns?

The quadratic function h(t) = -16.1t^2 + 150 models a balls height, in feet, over time, in seconds, after its dropped from a 15 story building. from what height in feet was the ball dropped?

With #! i’ve tried to figure it out but i can’t.

Find the zeros of the function. write the smaller solution first, and the larger solution second f(x)= (x+6)^2-49