Question

The path traveled by a bottlenose dolphin as it jumps out of water is modeled by the equation y = −0.4x2 + 3x, where y is the height above water and x is the horizontal distance in feet. If a beam of light is shone upward at an angle modeled by the equation x + y = 10, at what height from the water's surface will the beam of light hit the dolphin?

Answer 1

We're looking to find the point where the curve and the line intersect. How would you do that?

Answer 2

im not sure ,im trying to figure it out but the teacher isnt explaining it well

Answer 3

@mathmale

Answer 4

would it be 3
?