Greatest to least 8.4, 25/3, v72, 35/4

Through which points should a line of rotation be placed to create a cylinder with a radius of 3 units

If the equation of a perpendicular bisector of a triangle is y = 2x + 7, what is the slope of the side that it is bisecting? explain how you know. 

Liang bought a basket of apples to make pies for her friends. the basket of apples weighed p pounds. before she had time to make the pies, she ate 3 pounds of apples. there are 17 pounds of apples left to make pies.