Find the center and radius of the circle with the given equation. (x - 1)2 + (y - 7)2 = 4
A. Center (1, 7), r = 2
B. Center (7, 1), r = 2
C. Center (7, 1), r = 4
D. Center (1, 7), r = 4
Answer: A
Mathematics
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A. 
B. 
C. 
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Use multiplication to check the answer. If an answer is incorrect, find the correct answer.
A. Correct B. Incorrect; should be 65 R25 C. Incorrect; should be 66 R24 D. Incorrect; should be 65 R19
Mathematics
y?? + 2y? + y = 6, y (0) = 3, y?(0) = 1
Solve the initial-value problem.
Mathematics