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anonymous
 one year ago
A fountain on a lake sprays water in a parabolic arch modeled by the equation
y = −0.4x2 + 3x, where y is the height in feet and x is the horizontal distance. A beam of light is passed through the fountain to create a rainbow effect. If the beam is directed at an angle modeled by the equation 2.2x + 4.9y = 8.18, at what distance from the ground will the beam first touch the water spray?
0.6 feet
2 feet
4.2 feet
5.6 feet
anonymous
 one year ago
A fountain on a lake sprays water in a parabolic arch modeled by the equation y = −0.4x2 + 3x, where y is the height in feet and x is the horizontal distance. A beam of light is passed through the fountain to create a rainbow effect. If the beam is directed at an angle modeled by the equation 2.2x + 4.9y = 8.18, at what distance from the ground will the beam first touch the water spray? 0.6 feet 2 feet 4.2 feet 5.6 feet

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