Can someone me out with this question

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Can someone answer this question? : )

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3