A plane flying at a certain altitude is observed from two points that are 3 miles apart. The angles of elevation made by the two points are 55 and
72", as seen in the diagram
The altitude of the plane to the nearest tenth of a mile is
A.) 8.4 miles
B.) 8 miles
C.) 9.8 miles
D.) 6.8 miles

"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.