20x-28+12=16x+24 (i distributed the 4 to get this)
20x-16=16x+24 (added -28 & 12)
4x=40 (Subtracted 16x from both sides and added 16 to both sides)
(divide by 4 on both sides)
x=10
Pre-Image:
(-4, 2), (4, 2), (-3, -1), (3, -1)
Image:
(-8, 4), (8, 4), (-6, -2), (6, -2)
Recall that

where
is the angle between the vectors
whose magnitudes are
, respectively.
We have


12 laps because Lee ran 3 and that's half of what ray ran so times that by 2 and then times 6 by 2 and that's your answer