A vertical angle includes each of the pairs of opposite angles made by two intersecting lines, so ∠EKF and ∠HKI is the answer.
The first answer: 16f^3/3
The answer is D: 16,800 because you multiply the principal ($6,000), rate (7%), and time (4 years) to get the interest
Y=2/3x+2 is the given
3y-2x=6
+2x +2x
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3y= 2x+6
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3 3
y=2/3x+2
So the two equation are a coincide line to each other meaning its the same line