How to answer this in a i just write +3 or something

What’s the numerical coefficient of 6xy

Consider the integral: 4 0 16 − y2 − 16 − y2 4 1 x2 + y2 dz dx dy . (a) describe w. use the standard view of the x, y, and z axes. front half of a cone with a rounded top. full cone with a flat top. right half of a cone with a flat top. front half of a cone with a flat top. right half of a cone with a rounded top.

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?