Question

I need help on this one: The path of water from a sprinkler is modeled by a quadratic function: h(d)= -2d^2 + 6d + 4, where h(d) is the height of water, in feet, at a distance of d feet from the jet. Find how far from the sprinkler the water hits the ground.

Answer 1

we have 2 get the max of d.. then vertex of a quad is (-b/2a,rtd/4c) here x coordinate will represent d

Answer 2

So we are finding what the maximum distance is? How do we do that?

Answer 3

we have a quad in d... such just find its vertex

Answer 4

that will represent the max the value

Answer 5

Oh, okay. I think that I actually understand it now. Thanks for your help.