"A small object is dragged across a corrugated surface so that its heighthabove the ground in terms of its horizontal displacementxis given by

h = 2 + (3/2)sin (2x)

The object moves in such a way that the horizontal component of its velocity has a constant value of c, x = 0 at time t = 0.

Find a formula for x in terms of t."

I'm confused as to how I am supposed to obtain x and remove h. I don't understand how the horizontal component relates to this displacement.