When an item is marked up by a certain percent and then marked down by the same percent, is the sale price equal to the price before the markup and markdown

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

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

The graph of y=x3 is transformed as shown in the graph below. which equation represents the transformed function?