What number divided by -7 is equal to -15?

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis.how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15

The radius of a sphere is 3 inches. which represents the volume of the sphere?