? How do the lithosphere and the asthenosphere work together? A. The solid, brittle lithosphere moves on top of the solid, plastic asthenosphere.
B. The solid, plastic lithosphere flows over the solid, brittle asthenosphere.

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72