Aveterinarian purchases some medication for $19.50 and wants to make a $2 profit. what is the percent markup on this medication

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

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

What is the slope of the line (-7,2) (4,6)