Solve the problem.A boat is 120 feet from the base of a cliff. If the distance from the top of the cliff to the boat is 30 feet more than twice the height of the cliff, what is the height of the cliff? Round to the nearest tenth of a foot, if necessary.
A. 50 feet
B. 30 feet
C. 90 feet
D. 67.1 feet
Answer: A
Mathematics
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A. 
B. 
C. -8
D. 8
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