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Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6

Ahovercraft takes off from a platform. its height (in meters), xx seconds after takeoff, is modeled by: h(x)=-2x^2+20x+48h(x)=−2x 2 +20x+48 what is the maximum height that the hovercraft will reach?

Graph the linear equation find three points on the graph -x+2y=11