A night party was organized around a swimming pool. A professional installed a yellow light source suspended by a wire attached to a circular Styrofoam blade with radius R = 2.0m, so that no one at the party could see it. Source. The effect is that, whoever attended the party saw the pool water glistening yellow due to the diffusion of light by particles in the water, and by the reflection on the walls and the bottom. At what depth, approximately, should the light source be? *

Astudent found the solution below for the given inequality. |x-9|< -4 x-9> 4 and x-9< -4 x> 13 and x< 5 which of the following explains whether the student is correct? -the student is completely correct because the student correctly wrote and solved the compound inequality. -the student is partially correct because only one part of the compound inequality is written correctly. -the student is partially correct because the student should have written the statements using “or” instead of “and.” -the student is completely incorrect because there is no solution to this inequality.