Andy was on his way to a marble tournament when he met bob. andy's bag of marbles was heavy, so he gave bob 1/2 of his marbles plus two. then he met alex and gave him 1/4 of his remaining marbles plus five. just before arriving at the tournament, he met emily and gave her 1/2 of the marbles he had left. when he got to the tournament, he had two marbles left. how many marbles did he start with?

"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.