HELP PLEASEE PAST DUE !

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

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x