Hey help a human out plzz

For which rational expression is -2 an excluded value of x?

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)