Afish tanks dimensions are 20x30x12 in. it's filled with water to a depth of 10in. when 2l more water is added, some water over flowed. how much over flowed?

"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.